2017#March 2

• January 1 – Istanbul nightclub shooting: A gunman dressed as Santa Claus opens fire at the Reina nightclub in Istanbul, Turkey, killing 39 people and injuring 79 others.{{Cite web |date=January 1, 2017 |title=39 killed in armed attack at Istanbul nightclub |url=http://aa.com.tr/en/turkey/35-killed-in-armed-attack-at-istanbul-nightclub/717919 |archive-url=https://web.archive.org/web/20170102172915/http://aa.com.tr/en/turkey/39-killed-in-terror-attack-at-istanbul-nightclub/717919 |archive-date=January 2, 2017 |access-date=March 26, 2019 |website=Anadolu Agency}}
• January 8 – 2017 Jerusalem truck attack: A Palestinian assailant entered the road where the Israeli defense forces were located with a truck, killing 4 people and injuring 15 others.
• January 16 – Turkish Airlines Flight 6491, a cargo flight en route from Hong Kong to Istanbul via Bishkek, Kyrgyzstan, crashes in a residential area while attempting to land at Manas International Airport, Bishkek, killing all four crew members on board and 35 people on the ground.{{cite news |title=Kyrgyzstan plane crash: Dozens die as Turkish cargo jet hits homes |url=https://www.bbc.com/news/world-asia-38633526 |access-date=June 8, 2019 |work=BBC News |date=January 16, 2017 |archive-date=June 8, 2019 |archive-url=https://web.archive.org/web/20190608170805/https://www.bbc.com/news/world-asia-38633526 |url-status=live }}
• January 19 – 2016–2017 Gambian constitutional crisis: The Economic Community of West African States (ECOWAS) launches a military intervention in the Gambia after Yahya Jammeh refuses to cede power following the 2016 presidential elections.{{Cite web |last=Jobe |first=Adam |date=January 31, 2017 |title=ECOMIG forces explain mandate in Gambia |url=https://thepoint.gm/africa/gambia/article/ecomig-forces-explain-mandate-in-gambia |url-status=live |archive-url=https://web.archive.org/web/20230218175135/https://thepoint.gm/africa/gambia/article/ecomig-forces-explain-mandate-in-gambia |archive-date=February 18, 2023 |access-date=4 January 2022 |website=The Point}}
• January 21
• 2016–2017 Gambian constitutional crisis: Following the military intervention of ECOWAS, President Yahya Jammeh resigns from office after 23 years in power and flees into exile to Equatorial Guinea; the democratically elected Adama Barrow assumes office as President of The Gambia.{{cite news |first1=Tim |last1=Cocks |first2=Lamin |last2=Jahateh |title=Gambia's former leader Jammeh flies into exile in Equatorial Guinea |url=https://www.reuters.com/article/idUSKBN15505N |access-date=22 January 2017 |work=Reuters |archive-date=November 9, 2021 |archive-url=https://web.archive.org/web/20211109030331/https://www.reuters.com/article/idUSKBN15505N |url-status=live }}{{cite web |url=https://www.bbc.com/news/world-africa-38706426 |title=Ex-President Yahya Jammeh leaves The Gambia after losing election |date=22 January 2016 |access-date=22 January 2016 |publisher=BBC News |archive-date=July 15, 2022 |archive-url=https://web.archive.org/web/20220715014504/https://www.bbc.com/news/world-africa-38706426 |url-status=live }}
• Millions of people worldwide join the Women's March following the inauguration of Donald Trump as President of the United States. 420 marches were reported in the U.S. and 168 in other countries, becoming the largest single-day protest in American history.{{Cite web|url=http://www.politicususa.com/2017/01/21/womens-march-biggest-protest-history-estimated-2-4-million-march.html|title=Women's March Is The Biggest Protest In US History As An Estimated 2.9 Million March|last=Easley|first=Jason|date=2017-01-21|website=Politicus USA|access-date=2017-01-22|archive-date=November 10, 2021|archive-url=https://web.archive.org/web/20211110091226/https://www.politicususa.com/2017/01/21/womens-march-biggest-protest-history-estimated-2-4-million-march.html|url-status=live}}
• January 27 – U.S. President Donald Trump issues executive order banning travel and immigration from seven Muslim-majority nations. Protests against the immigration order erupt nationwide for about two weeks.
• January 30 – Morocco rejoins the African Union.{{cite web |author1=Ed Cropley |title=In tilt from Europe, Morocco rejoins African Union |url=https://www.reuters.com/article/us-africa-summit-morocco/in-tilt-from-europe-morocco-rejoins-african-union-idUSKBN15F18Z |publisher=Reuters |access-date=15 September 2021 |date=31 Jan 2017 |archive-date=September 15, 2021 |archive-url=https://web.archive.org/web/20210915224841/https://www.reuters.com/article/us-africa-summit-morocco/in-tilt-from-europe-morocco-rejoins-african-union-idUSKBN15F18Z |url-status=live }}

{{Redirect|February 2017|the Charli XCX song|Charli (album)}}

• February 11 – North Korea prompts international condemnation by test firing a ballistic missile across the Sea of Japan.{{Cite news |date=12 February 2017 |title=North Korea conducts ballistic missile test |url=https://www.bbc.co.uk/news/world-asia-38947451 |url-status=live |archive-url=https://web.archive.org/web/20170212000559/http://www.bbc.co.uk/news/world-asia-38947451 |archive-date=February 12, 2017 |access-date=February 12, 2017 |work=BBC News}}
• February 13 – Assassination of Kim Jong-nam: Kim Jong-nam, the eldest son of deceased North Korean leader Kim Jong-il and the half-brother of current North Korean leader Kim Jong-un, is killed after being attacked by two women with VX nerve agent at Kuala Lumpur International Airport in Malaysia.{{cite news|last1=McCurry |first1=Justin |title=Kim Jong-un's half-brother dies after 'attack' at airport in Malaysia |url=https://www.theguardian.com/world/2017/feb/14/kim-jong-un-half-brother-reportedly-killed-malaysia-north-korea |access-date=June 9, 2019 |work=The Guardian |date=February 14, 2017 |url-status=live |archive-url=https://web.archive.org/web/20170214130722/https://www.theguardian.com/world/2017/feb/14/kim-jong-un-half-brother-reportedly-killed-malaysia-north-korea |archive-date=February 14, 2017}}
• February 26 – An annular solar eclipse is visible from Pacific, Chile, Argentina, Atlantic, Africa. It is the 29th eclipse of the 140th saros cycle (descending node), which started with a partial solar eclipse visible in the Southern Hemisphere on April 16, 1512, and will conclude with another partial solar eclipse visible in the Northern Hemisphere on June 1, 2774.{{cite web |url=https://eclipse.gsfc.nasa.gov/SEsaros/SEsaros140.html |title=Nasa Eclipse Web Site: Saros Series Catalog of Solar Eclipses |publisher=National Aeronautics and Space Administration |date=26 September 2009 |website=eclipse.gsfc.nasa.gov |access-date=2021-10-21 |archive-date=October 19, 2021 |archive-url=https://web.archive.org/web/20211019041926/https://eclipse.gsfc.nasa.gov/SEsaros/SEsaros140.html |url-status=live }}

• March 3 – Nintendo releases the Switch worldwide.{{Cite magazine|title=Everything You Need to Know About the Nintendo Switch|url=https://time.com/4632820/nintendo-switch-nx/|access-date=2021-06-07|magazine=Time|language=en|archive-date=2021-05-17|archive-url=https://web.archive.org/web/20210517200517/https://time.com/4632820/nintendo-switch-nx/|url-status=live}}
• March 10 – The UN warns that the world is facing the largest humanitarian crisis since World War II, with up to 20 million people at risk of starvation and famine in Yemen, Somalia, South Sudan and Nigeria.{{cite news|title=UN: World facing greatest humanitarian crisis since 1945|url=https://www.bbc.co.uk/news/world-africa-39238808|access-date=March 11, 2017|work=BBC News|date=March 11, 2017|archive-date=March 11, 2017|archive-url=https://web.archive.org/web/20170311024224/http://www.bbc.co.uk/news/world-africa-39238808|url-status=live}}
• March 14 – March 2017 North American blizzard: A major late-season blizzard affects the Northeastern United States, New England and Canada, dumping up to three feet of snow in the hardest hit areas.{{cite news |title=Winter Storm Stella was a Category 3 on Northeast Snowfall Impact Scale |url=https://weather.com/storms/winter/news/winter-storm-stella-northeast-blizzard-warning-noreaster-snow-forecast-march-2017 |access-date=25 September 2021 |work=The Weather Channel |date=March 21, 2017 |archive-date=September 25, 2021 |archive-url=https://web.archive.org/web/20210925153958/https://weather.com/storms/winter/news/winter-storm-stella-northeast-blizzard-warning-noreaster-snow-forecast-march-2017 |url-status=live }}
• March 29 – The United Kingdom triggers Article 50 of the Lisbon Treaty, starting the Brexit negotiations, the talks for the United Kingdom to leave the European Union.{{cite news|title=Brexit: Article 50 has been triggered - what now?|url=https://www.bbc.co.uk/news/uk-politics-39143978|access-date=March 29, 2017|work=BBC News|date=March 29, 2017|archive-date=January 3, 2020|archive-url=https://web.archive.org/web/20200103013048/https://www.bbc.co.uk/news/uk-politics-39143978|url-status=live}}
• March 30 – SpaceX conducts the world's first reflight of an orbital-class rocket.{{cite web|title=SpaceX Launches a Satellite With a Partly Used Rocket|url=https://www.nytimes.com/2017/03/30/science/spacex-launches-a-satellite-with-a-partly-used-rocket.html|work=The New York Times|date=March 30, 2017|access-date=March 31, 2017|archive-date=September 6, 2020|archive-url=https://web.archive.org/web/20200906083219/https://www.nytimes.com/2017/03/30/science/spacex-launches-a-satellite-with-a-partly-used-rocket.html|url-status=live}}{{cite web|title=Success for SpaceX 're-usable rocket'|url=https://www.bbc.co.uk/news/science-environment-39451401|work=BBC News|date=March 31, 2017|access-date=March 31, 2017|archive-date=May 5, 2022|archive-url=https://web.archive.org/web/20220505091332/https://www.bbc.co.uk/news/science-environment-39451401|url-status=live}}
• March 31 – Horacio Cartes presents to Congress his plans of allowing the re-election of the president of Paraguay for a second term, going against the Constitution of Paraguay, leading to a political crisis which ended in the storm of Congress by liberal activists and in the assassination of Rodrigo Quintana by the police. After this, the Congress votes against the re-election project.{{Cite web |date=2017-04-01 |title=Rioters storm Paraguay congress and set it on fire after vote to extend president's term |url=https://www.france24.com/en/20170401-paraguayans-protest-congress-fire-secret-vote-president-cartes-term |access-date=2022-05-07 |website=France 24 |language=en |archive-date=May 7, 2022 |archive-url=https://web.archive.org/web/20220507203833/https://www.france24.com/en/20170401-paraguayans-protest-congress-fire-secret-vote-president-cartes-term |url-status=live }}

• April 7 – In response to a suspected chemical weapons attack on a rebel-held town, the U.S. military launches 59 Tomahawk cruise missiles at an air base in Syria. Russia describes the strikes as an "aggression", adding they significantly damage U.S.–Russia ties.{{cite web|url=https://www.bbc.co.uk/news/world-us-canada-39523654|title=Syria war: US launches missile strikes in response to chemical 'attack'|date=April 7, 2017|work=BBC News|access-date=April 7, 2017|archive-date=April 7, 2017|archive-url=https://web.archive.org/web/20170407013217/http://www.bbc.co.uk/news/world-us-canada-39523654|url-status=live}}
• April 13 – In the 2017 Nangarhar airstrike, the U.S. drops the GBU-43/B MOAB, the world's largest non-nuclear weapon, at an ISIL base in the Nangarhar Province of eastern Afghanistan.{{Cite news|last1=Cooper|first1=Helene|last2=Mashal|first2=Mujib|date=2017-04-13|title=U.S. Drops 'Mother of All Bombs' on ISIS Caves in Afghanistan|work=The New York Times|url=https://www.nytimes.com/2017/04/13/world/asia/moab-mother-of-all-bombs-afghanistan.html|access-date=2022-01-30|issn=0362-4331|archive-date=September 14, 2019|archive-url=https://web.archive.org/web/20190914051825/https://www.nytimes.com/2017/04/13/world/asia/moab-mother-of-all-bombs-afghanistan.html|url-status=live}}
• April 15 – Emma Morano, an Italian supercentenarian, becomes the last known person born in the 19th century to die.
• April 27 – The 2017 storming of the Macedonian Parliament occurs.

• May 9–13 – The Eurovision Song Contest takes place in Kyiv, Ukraine, and is won by Portuguese entrant Salvador Sobral with the song "{{lang|pt|Amar Pelos Dois|italic=no}}".{{Cite web|title=Eurovision 2017 Results: Voting & Points|url=https://eurovisionworld.com/eurovision/2017|access-date=2022-01-30|website=Eurovisionworld|language=en-gb|archive-date=June 12, 2019|archive-url=https://web.archive.org/web/20190612160322/https://eurovisionworld.com/eurovision/2017|url-status=live}}
• May 12 – WannaCry ransomware attack: Computers around the world are hit by a large-scale ransomware cyberattack, which goes on to affect at least 150 countries.{{cite web|url=https://news.sky.com/story/biggest-ransomware-attack-in-history-targets-almost-100-countries-10874647|title=Ransomware strike gives glimpse of 'cyber-apocalypse'|work=Sky News|date=May 13, 2017|access-date=May 13, 2017|archive-date=May 15, 2017|archive-url=https://web.archive.org/web/20170515075055/http://news.sky.com/story/biggest-ransomware-attack-in-history-targets-almost-100-countries-10874647|url-status=live}}{{cite web|url=https://www.bbc.co.uk/news/technology-39913630|title=Ransomware: Cyber-attack threat escalating - Europol|work=BBC News|date=May 14, 2017|access-date=May 14, 2017|archive-date=May 14, 2017|archive-url=https://web.archive.org/web/20170514103807/http://www.bbc.co.uk/news/technology-39913630|url-status=live}}
• May 22 – An ISIL terrorist bombing attack at an Ariana Grande concert in Manchester, England, kills 22 people and injures more than 500 others.{{Cite news|url=http://www.cbsnews.com/news/ariana-grande-concert-manchester-arena-explosion|title=UK police: 22 confirmed dead after terror incident at Ariana Grande concert|work=CBS News|date=May 22, 2017|access-date=May 22, 2017|archive-date=May 23, 2017|archive-url=https://web.archive.org/web/20170523062040/http://www.cbsnews.com/news/ariana-grande-concert-manchester-arena-explosion/|url-status=live}}

• June 1 – Amidst widespread criticism, the U.S. government announces its decision to withdraw from the Paris Climate Agreement in due time.{{cite web|url=https://euobserver.com/environment/138099|title=US leaves Paris climate deal|publisher=euobserver|date=June 1, 2017|access-date=December 2, 2017|archive-date=December 3, 2017|archive-url=https://web.archive.org/web/20171203013723/https://euobserver.com/environment/138099|url-status=live}}
• June 3
• London Bridge attack: Eight people are murdered and dozens of civilians are wounded by Islamist terrorists. Three of the attackers are shot dead by the police. ISIS claims responsibility for the attack.{{Cite news|last=Wamsley|first=Laurel|date=2017-06-04|title=ISIS Claims Responsibility For London Attack That Killed 7, Injured 48|work=NPR|url=https://www.npr.org/sections/thetwo-way/2017/06/04/531459784/raids-in-london-after-attack-that-killed-7-injured-48|access-date=2022-01-30|archive-date=January 30, 2022|archive-url=https://web.archive.org/web/20220130182102/https://www.npr.org/sections/thetwo-way/2017/06/04/531459784/raids-in-london-after-attack-that-killed-7-injured-48|url-status=live}}
• 2017 Turin stampede: During a screening of the 2017 UEFA Champions League Final, pepper spray is discharged by individuals attempting to rob soccer fans in the square, causing the crowd to panic. There are 3 deaths and 1,672 people wounded.{{Cite web|date=2017-06-04|title=Cede una ringhiera in piazza San Carlo a Torino: panico fra i tifosi, mille feriti. Sei sono gravi|url=https://www.lastampa.it/torino/2017/06/04/news/cede-una-ringhiera-in-piazza-san-carlo-a-torino-panico-fra-i-tifosi-mille-feriti-sei-sono-gravi-1.34577465|access-date=2021-02-27|website=lastampa.it|language=it-IT|archive-date=May 3, 2021|archive-url=https://web.archive.org/web/20210503094646/https://www.lastampa.it/torino/2017/06/04/news/cede-una-ringhiera-in-piazza-san-carlo-a-torino-panico-fra-i-tifosi-mille-feriti-sei-sono-gravi-1.34577465|url-status=live}}
• June 5
• Montenegro joins NATO as the 29th member.{{Cite web|last=NATO|title=Montenegro joins NATO as 29th Ally|url=http://www.nato.int/cps/en/natohq/news_144647.htm|access-date=2022-01-30|website=NATO|archive-date=January 30, 2022|archive-url=https://web.archive.org/web/20220130224118/https://www.nato.int/cps/en/natohq/news_144647.htm|url-status=live}}
• The Qatar diplomatic crisis of 2017–18 starts, as Saudi Arabia, Bahrain, the United Arab Emirates and other Arab countries block Qatari access to their seas and air.{{cite news|url=https://www.bbc.com/news/world-middle-east-40159080|title=Qatar row: What's caused the fall-out between Gulf neighbours?|first=David|last=Roberts|date=2017-06-05|work=BBC News|access-date=2024-08-11|archive-date=2019-04-26|archive-url=https://web.archive.org/web/20190426094813/https://www.bbc.com/news/world-middle-east-40159080|url-status=live}}
• June 7 – Two terrorist attacks are simultaneously carried out by five Islamic State (ISIL) terrorists against the Iranian Parliament building and the Mausoleum of Ruhollah Khomeini, both in Tehran, leaving 17 civilians dead and 43 more wounded.
• June 8 – A snap general election is held in the United Kingdom, three years before the next was due, resulting in a hung parliament, with the Conservative Party, led by Prime Minister Theresa May, losing their majority in Parliament. The Labour Party, led by Jeremy Corbyn, makes gains for the first time since 1997. Days later, the Conservative Party, now lacking a majority, enters a confidence-and-supply deal with the Northern Ireland loyalist party DUP.{{cite news|url=https://www.telegraph.co.uk/news/0/tory-dup-deal-agreement-full|title=Tory-DUP deal: The agreement in full|date=June 26, 2017|access-date=January 24, 2018|work=The Telegraph|url-status=live|archive-url=https://web.archive.org/web/20170626191220/http://www.telegraph.co.uk/news/0/tory-dup-deal-agreement-full|archive-date= June 26, 2017}}
• June 10 – The 2017 World Expo is opened in Astana, Kazakhstan.{{cite web|title=Future energy – solutions for tackling mankind's greatest challenge|url=http://www.bie-paris.org/site/en/expos/upcoming-expos/expo-astana-2017/future-energy-solutions-for-tackling-mankind-s-greatest-challenge|publisher=BIE|access-date=November 25, 2016|archive-date=August 11, 2016|archive-url=https://web.archive.org/web/20160811091823/http://www.bie-paris.org/site/en/expos/upcoming-expos/expo-astana-2017/future-energy-solutions-for-tackling-mankind-s-greatest-challenge|url-status=live}}
• June 18 – Iran's Islamic Revolution Guards Corps (IRGC) fire six surface-to-surface mid-range ballistic missiles from domestic bases targeting ISIL forces in the Syrian Deir ez-Zor Governorate in response to the terrorist attacks in Tehran earlier this month.
• June 21 – The Great Mosque of al-Nuri in Mosul, Iraq, is destroyed by ISIL.{{cite news|title=Destroying Great Mosque of al-Nuri 'is Isis declaring defeat'|url=https://www.theguardian.com/world/2017/jun/21/mosuls-grand-al-nouri-mosque-blown-up-by-isis-fighters|access-date=June 22, 2017|work=The Guardian|date=June 22, 2017|archive-date=May 17, 2019|archive-url=https://web.archive.org/web/20190517180513/https://www.theguardian.com/world/2017/jun/21/mosuls-grand-al-nouri-mosque-blown-up-by-isis-fighters|url-status=live}}
• June 24 – The Goodwin Fire, a wildfire, starts in Yavapai County, Arizona near Mayer and forces evacuations of more than a hundred people.{{cite web |title=DC-10 air tankers heading to Prescott to fight Goodwin Fire |url=https://www.abc15.com/news/region-southeast-valley/mesa/dc-10-air-tankers-heading-to-prescott-to-fight-goodwin-fire |website=abc15.com |date=June 29, 2017 |publisher=Jason Volentine |access-date=15 May 2021 |archive-date=April 20, 2021 |archive-url=https://web.archive.org/web/20210420163640/https://www.abc15.com/news/region-southeast-valley/mesa/dc-10-air-tankers-heading-to-prescott-to-fight-goodwin-fire |url-status=live }}
• June 25 – The World Health Organization estimates that the 2016–17 Yemen cholera outbreak has over 200,000 cases.
• June 26 – The 2017 America's Cup yacht race, sailed in Bermuda, is won by New Zealand's Aotearoa.
• June 27 – 2017 cyberattacks on Ukraine: A series of cyberattacks using the Petya malware begins, affecting organizations in Ukraine.{{Cite news|url=https://www.reuters.com/article/us-ukraine-cyber-attacks-idUSKBN19I1IJ|title=Ukrainian banks, electricity firm hit by fresh cyber attack|last=Prentice|first=Alessandra|date=June 27, 2017|work=Reuters|access-date=June 27, 2017|archive-date=July 16, 2019|archive-url=https://web.archive.org/web/20190716014712/https://www.reuters.com/article/us-ukraine-cyber-attacks-idUSKBN19I1IJ|url-status=live}}

• July 4 – Russia and China urge North Korea to halt its missile and nuclear programs after it successfully tested its first intercontinental ballistic missile.{{cite news|url=https://www.bbc.co.uk/news/world-asia-40497972|title=North Korea missile test: Russia and China urge freeze in launches|date=July 4, 2017|work=BBC News|access-date=July 4, 2017|archive-date=July 4, 2017|archive-url=https://web.archive.org/web/20170704144904/http://www.bbc.co.uk/news/world-asia-40497972|url-status=live}}{{cite web|url=http://www.cnn.com/2017/07/03/asia/north-korea-missile-japan-waters/index.html|title=North Korea tests missile it claims can reach 'anywhere in the world'|date=July 4, 2017|publisher=CNN|access-date=July 4, 2017|archive-date=July 4, 2017|archive-url=https://web.archive.org/web/20170704013706/http://www.cnn.com/2017/07/03/asia/north-korea-missile-japan-waters/index.html|url-status=live}}
• July 7
• The Treaty on the Prohibition of Nuclear Weapons is voted for by 122 states.{{cite web |url=https://www.un.org/disarmament/wmd/nuclear/tpnw/ |title=Treaty on the prohibition of nuclear weapons |website=United Nations Office for Disarmament Affairs |access-date=22 September 2021 |archive-date=September 22, 2021 |archive-url=https://web.archive.org/web/20210922202646/https://www.un.org/disarmament/wmd/nuclear/tpnw/ |url-status=live }}
• ISIL affiliated insurgents attacked an Egyptian military checkpoint in Northern Sinai's Rafah which resulted in the deaths of 26 Egyptian personnel including colonel Ahmed Mansi and 44 other insurgents.
• July 10 – Iraqi Civil War: Mosul is declared fully liberated from the Islamic State of Iraq and the Levant.{{cite news|url=https://www.bbc.com/news/world-middle-east-40558836|title=Battle for Mosul: Iraq PM Abadi formally declares victory|publisher=BBC|date=July 10, 2017|access-date=July 10, 2017|archive-date=July 11, 2017|archive-url=https://web.archive.org/web/20170711051709/http://www.bbc.com/news/world-middle-east-40558836|url-status=live}}

• August 5
• The UN Security Council unanimously approves fresh sanctions on North Korean trade and investment.{{cite web|url=https://www.bbc.co.uk/news/world-asia-40838582|title=North Korea: UN backs fresh sanctions over missile tests|work=BBC News|date=August 5, 2017|access-date=August 5, 2017|archive-date=August 5, 2017|archive-url=https://web.archive.org/web/20170805192106/http://www.bbc.co.uk/news/world-asia-40838582|url-status=live}}
• Mauritania holds a constitutional referendum for approval of proposed amendments to the constitution.
• August 12 – The Unite the Right rally is held in Charlottesville, Virginia, United States, by a variety of white nationalist and other far-right groups; Heather Heyer, a counter-protester, is killed after being hit by a car.
• August 17
• The first observation of a collision of two neutron stars (GW170817){{cite journal|title = Merging neutron stars generate gravitational waves and a celestial light show|first = Adrian|last = Cho|journal = Science|year = 2017|doi = 10.1126/science.aar2149}} is hailed as a breakthrough in multi-messenger astronomy{{cite journal|title = Editorial: Focus on the Electromagnetic Counterpart of the Neutron Star Binary Merger GW170817|first = Edo|last = Berger|journal = The Astrophysical Journal Letters|volume = 848|issue = 2|url = http://iopscience.iop.org/journal/2041-8205/page/Focus_on_GW170817|access-date = October 29, 2017|archive-date = September 13, 2018|archive-url = https://web.archive.org/web/20180913111858/http://iopscience.iop.org/journal/2041-8205/page/Focus_on_GW170817|url-status = live}} when both gravitational and electromagnetic waves from the event are detected.{{cite journal|title = Multi-messenger Observations of a Binary Neutron Star Merger|first1 = B. P.|last1 = Abbott|display-authors = etal|collaboration = LIGO Scientific Collaboration & Virgo Collaboration|journal = The Astrophysical Journal Letters|volume = 848|issue = 2|doi-access = free|doi = 10.3847/2041-8213/aa91c9|page = L12|year = 2017|arxiv = 1710.05833|bibcode = 2017ApJ...848L..12A}}{{cite journal|title = Gravitational Waves and Gamma-Rays from a Binary Neutron Star Merger: GW170817 and GRB 170817A|first1 = B. P.|last1 = Abbott|display-authors = etal|collaboration = LIGO Scientific Collaboration & Virgo Collaboration|journal = The Astrophysical Journal Letters|volume = 848|issue = 2|doi-access = free|doi = 10.3847/2041-8213/aa920c|page = L13|year = 2017|arxiv = 1710.05834|bibcode = 2017ApJ...848L..13A}} Data from the event provided confirmatory evidence for the r-process theory of the origin of heavy elements like gold.{{cite news|first = Lisa M.|last = Krieger|title = A Bright Light Seen Across The Universe, Proving Einstein Right – Violent collisions source of our gold, silver|newspaper = The Mercury News|date = October 16, 2017|access-date = October 29, 2017|url = http://www.mercurynews.com/2017/10/16/a-bright-light-seen-across-the-universe-proving-einstein-right/|archive-date = October 16, 2017|archive-url = https://web.archive.org/web/20171016140304/http://www.mercurynews.com/2017/10/16/a-bright-light-seen-across-the-universe-proving-einstein-right/|url-status = live}}{{cite journal|title = The Emergence of a Lanthanide-rich Kilonova Following the Merger of Two Neutron Stars|first1 = N. R.|last1 = Tanvir|display-authors=etal|journal = The Astrophysical Journal Letters|volume = 848|issue = 2|doi-access = free|doi = 10.3847/2041-8213/aa90b6|page = L27|year = 2017|arxiv = 1710.05455|bibcode = 2017ApJ...848L..27T}}
• 2017 Barcelona attacks: 22-year-old Younes Abouyaaqoub drives a van into pedestrians on La Rambla in Barcelona, killing 13 people and injuring at least 130 others.
• August 18 – The first terrorist attack ever sentenced as a crime in Finland kills two people and injures eight others. Islamic terrorist Abderrahman Bouanane, a Moroccan man carried out the ISIS-inspired attack in southwest Finland.{{Cite news|url=https://www.nytimes.com/aponline/2018/06/15/world/europe/ap-eu-finland-stabbings.html|title=Asylum-Seeker Gets Life After Finland's First Terror Trial|date=2018-06-15|work=The New York Times|access-date=2018-06-16|archive-date=June 15, 2018|archive-url=https://web.archive.org/web/20180615163413/https://www.nytimes.com/aponline/2018/06/15/world/europe/ap-eu-finland-stabbings.html|url-status=live}}{{Cite news|url=https://www.reuters.com/article/us-finland-stabbings/knife-attacker-sentenced-to-life-by-a-finnish-court-idUSKBN1JB15F|title=Knife attacker sentenced to life by a Finnish court|last=Rosendahl|first=Jussi|date=2018-06-15|work=Reuters|access-date=2018-06-16|archive-date=June 16, 2018|archive-url=https://web.archive.org/web/20180616023521/https://www.reuters.com/article/us-finland-stabbings/knife-attacker-sentenced-to-life-by-a-finnish-court-idUSKBN1JB15F|url-status=live}}
• August 21 – A total solar eclipse (nicknamed "The Great American Eclipse"){{cite magazine|first = Edward|last = Steed|date = September 4, 2017|title = The Great American Eclipse of 2017|magazine = The New Yorker|access-date = October 29, 2017|url = https://www.newyorker.com/magazine/2017/09/11/the-great-american-eclipse-of-2017|archive-date = August 15, 2018|archive-url = https://web.archive.org/web/20180815091120/https://www.newyorker.com/magazine/2017/09/11/the-great-american-eclipse-of-2017|url-status = live}} is visible within a band across the entire contiguous United States of America, passing from the Pacific to the Atlantic coasts. The moon was just 3 days past perigee, making it relatively large.{{cite magazine|first = Melissa|last = Chan|date = July 25, 2017|title = The 2017 Total Solar Eclipse: Everything You Need to Know|magazine = Time|access-date = October 29, 2017|url = https://time.com/4750899/total-solar-eclipse/|archive-date = July 29, 2017|archive-url = https://web.archive.org/web/20170729101012/http://time.com/4750899/total-solar-eclipse/|url-status = live}}{{cite web|title = What the 2017 Solar Eclipse Taught Us About Boosting Public Interest in Science|first = Nola Taylor|last = Redd|website = space.com|publisher = Purch Group|date = September 29, 2017|access-date = October 29, 2017|url = https://www.space.com/38318-solar-eclipse-2017-house-science-hearing.html|archive-date = October 4, 2019|archive-url = https://web.archive.org/web/20191004061605/https://www.space.com/38318-solar-eclipse-2017-house-science-hearing.html|url-status = live}}{{cite AV media|url=https://www.sciencechannel.com/tv-shows/great-american-eclipse/full-episodes/great-american-eclipse|date=August 22, 2017|access-date=October 29, 2017|title=The Great American Eclipse|publisher=Science Channel|last=Massimino|first=Mike (narrator)|author-link=Mike Massimino|archive-date=April 8, 2019|archive-url=https://web.archive.org/web/20190408053150/https://www.sciencechannel.com/tv-shows/great-american-eclipse/full-episodes/great-american-eclipse|url-status=live}}
• August 25–ongoing – A military operation targeting Rohingya Muslims in Myanmar "seems a textbook example of ethnic cleansing", according to the United Nations High Commissioner for Human Rights.{{cite news|title=Rohingya crisis: UN sees 'ethnic cleansing' in Myanmar|url=https://www.bbc.co.uk/news/world-asia-41224108|access-date=September 11, 2017|work=BBC News|date=September 11, 2017|archive-date=January 11, 2018|archive-url=https://web.archive.org/web/20180111044922/http://www.bbc.co.uk/news/world-asia-41224108|url-status=live}}
• August 25–30 – Hurricane Harvey strikes the United States as a Category 4 hurricane, causing catastrophic damage to the Houston metropolitan area, mostly due to record-breaking floods. At least 108 deaths are recorded, and total damage reaches $125 billion (2017 USD), making Harvey the costliest natural disaster in United States history, tied with Hurricane Katrina in 2005.{{cite report|author1=Eric S. Blake|author2=David A. Zelinsky|publisher=National Hurricane Center|date=January 23, 2018|access-date=January 29, 2018|title=Hurricane Harvey (AL092017)|series=Tropical Cyclone Report|url=https://www.nhc.noaa.gov/data/tcr/AL092017_Harvey.pdf|archive-date=January 26, 2018|archive-url=https://web.archive.org/web/20180126083538/https://www.nhc.noaa.gov/data/tcr/AL092017_Harvey.pdf|url-status=live}}{{cite report|archive-date=January 27, 2018|url-status=live|date=January 12, 2018|title=Costliest U.S. tropical cyclones tables update|access-date=January 12, 2018|publisher=United States National Hurricane Center|url=https://www.nhc.noaa.gov/news/UpdatedCostliest.pdf|archive-url=https://web.archive.org/web/20180127083930/https://www.nhc.noaa.gov/news/UpdatedCostliest.pdf}}

• September 1 – Russian President Vladimir Putin expels 755 diplomats in response to United States sanctions.{{cite web | title=Putin expels 755 diplomats in response to US sanctions | website=Fox News | date=July 30, 2017 | url=https://www.foxnews.com/world/putin-expels-755-diplomats-in-response-to-us-sanctions | access-date=December 30, 2017 | archive-date=November 12, 2017 | archive-url=https://web.archive.org/web/20171112221657/http://www.foxnews.com/world/2017/07/30/putin-expels-755-diplomats-in-response-to-us-sanctions.html | url-status=live }}
• United States Passports become invalid to travel to North Korea, in response to the death of Otto Warmbier.
• September 3 – North Korea conducts its sixth and most powerful nuclear test.{{cite news|url=https://www.nytimes.com/2017/09/03/world/asia/north-korea-tremor-possible-6th-nuclear-test.html|title=North Korean Nuclear Test Draws U.S. Warning of 'Massive Military Response'|first1=David E.|last1=Sanger|first2=Choe|last2=Sang-Hun|newspaper=The New York Times|date=September 2, 2017|access-date=October 20, 2017|archive-date=September 3, 2017|archive-url=https://web.archive.org/web/20170903231317/https://www.nytimes.com/2017/09/03/world/asia/north-korea-tremor-possible-6th-nuclear-test.html|url-status=live}}
• September 6 – Hurricane Irma, at peak intensity, would make the first of many powerful landfalls along the Caribbean islands and the United States. Damages would total $77.2 billion (2017 USD), and 134 would be killed by the storm.{{Cite web |title=Hurricane Irma Tropical Cyclone Report |url=https://www.nhc.noaa.gov/data/tcr/AL112017_Irma.pdf}}
• September 13 – The International Olympic Committee awards Paris and Los Angeles the right to host the 2024 and 2028 Summer Olympics, respectively.{{cite web|last1=Wharton|first1=David|title=Los Angeles makes deal to host 2028 Summer Olympics|url=http://www.latimes.com/sports/sportsnow/la-sp-2028-olympics-deal-20170731-story.html|website=Los Angeles Times|date=July 31, 2017|access-date=July 31, 2017|archive-date=September 22, 2017|archive-url=https://web.archive.org/web/20170922160657/http://www.latimes.com/sports/sportsnow/la-sp-2028-olympics-deal-20170731-story.html|url-status=live}}
• September 15 – Cassini–Huygens ends its 13-year mission by plunging into Saturn, becoming the first spacecraft to enter the planet's atmosphere.{{cite web | url=http://saturn.jpl.nasa.gov/interactive/missiontimeline/ | title=Cassini Solstice Mission: Cassini Mission Timeline | publisher=NASA | work=Jet Propulsion Laboratory | access-date=September 5, 2015 | archive-date=April 21, 2016 | archive-url=https://web.archive.org/web/20160421185642/http://saturn.jpl.nasa.gov/interactive/missiontimeline/ | url-status=live }}
• September 19 – Twelve days after another powerful earthquake, and on the 32nd anniversary of the deadly 1985 Mexico City earthquake, a 7.1 {{M|w}} earthquake strikes central Mexico, killing 370, leaving up to 6,000 injured{{cite news|title=Death toll in Mexico earthquake rises to 369 as last body pulled from rubble|url=https://www.cbsnews.com/news/mexico-earthquake-death-toll-rises-last-body-pulled-from-rubble/|access-date=October 18, 2017|work=CBS News|date=October 4, 2017|archive-date=October 19, 2017|archive-url=https://web.archive.org/web/20171019005020/https://www.cbsnews.com/news/mexico-earthquake-death-toll-rises-last-body-pulled-from-rubble/|url-status=live}} and thousands more homeless.{{cite news|last1=McDonnell|first1=Patrick J.|title='I am full of anguish right now.' Thousands in Mexico remain without homes weeks after quake|url=http://www.latimes.com/world/mexico-americas/la-fg-mexico-quake-2017-story.html|access-date=October 18, 2017|work=L.A. Times|date=October 11, 2017|archive-date=October 18, 2017|archive-url=https://web.archive.org/web/20171018102533/http://www.latimes.com/world/mexico-americas/la-fg-mexico-quake-2017-story.html|url-status=live}}
• September 19–20 – Just two weeks after Hurricane Irma struck the Caribbean, Hurricane Maria strikes similar areas, making landfall on Dominica as a Category 5 hurricane, and Puerto Rico as a Category 4 hurricane. Maria caused over 3,000 deaths and damages estimated in excess of $91.6 billion (2017 USD).{{cite news|last1=Otero|first1=Carlos Antonio|title=Impacto multibillonario de María|url=http://www.elvocero.com/economia/impacto-multibillonario-de-mar-a/article_5f364bf0-a176-11e7-892a-ff1a85c871da.html|access-date=September 25, 2017|publisher=El Vocero|date=September 25, 2017|language=es|archive-date=April 8, 2019|archive-url=https://web.archive.org/web/20190408053151/https://www.elvocero.com/economia/impacto-multibillonario-de-mar-a/article_5f364bf0-a176-11e7-892a-ff1a85c871da.html|url-status=live}}
• September 25 – Kurdistan Region votes in a referendum to become an independent state, in defiance of Iraq;{{cite web|title=Kurdistan referendum results: 93% of Iraqi Kurds vote for independence, say reports|url=https://www.independent.co.uk/news/world/middle-east/kurdistan-referendum-results-vote-yes-iraqi-kurds-independence-iran-syria-a7970241.html |archive-url=https://ghostarchive.org/archive/20220501/https://www.independent.co.uk/news/world/middle-east/kurdistan-referendum-results-vote-yes-iraqi-kurds-independence-iran-syria-a7970241.html |archive-date=May 1, 2022 |url-access=subscription |url-status=live|publisher=Independent.co.uk|date= September 27, 2017}}{{cbignore}} by October 15, the crisis escalates into a short-lived armed conflict over disputed territories.
• September 26 – Fortnite Battle Royale releases.

• October 1 – 60 people are killed and 867 more injured when Stephen Paddock opens fire on a crowd in Las Vegas, surpassing the 2016 Orlando nightclub shooting as the deadliest mass shooting perpetrated by a lone gunman in U.S. history.{{cite news |url=https://lasvegassun.com/news/2018/jan/19/sheriff-to-provide-update-about-strip-mass-shootin/ |title=Sheriff: Person of interest part of Strip shooting probe; Paddock had child porn |date=January 19, 2018 |work=Las Vegas Sun |access-date=January 19, 2018 |first1=Ricardo |last1=Torres-Cortez |archive-date=January 19, 2018 |archive-url=https://web.archive.org/web/20180119213722/https://lasvegassun.com/news/2018/jan/19/sheriff-to-provide-update-about-strip-mass-shootin/ |url-status=live }}{{cite news|url=https://www.reviewjournal.com/crime/homicides/california-woman-declared-59th-victim-of-2017-massacre-in-las-vegas-2102779/|title=California woman declared 59th victim of 2017 massacre in Las Vegas|publisher=The Las Vegas Review-Journal|last=Lacanlale|first=Rio|date=August 24, 2020|access-date=August 27, 2020|archive-date=March 23, 2023|archive-url=https://web.archive.org/web/20230323133937/https://www.reviewjournal.com/crime/homicides/california-woman-declared-59th-victim-of-2017-massacre-in-las-vegas-2102779/|url-status=live}}
• October 12 – The United States announces its decision to withdraw from UNESCO,{{cite web| url =https://www.state.gov/r/pa/prs/ps/2017/10/274748.htm| title =The United States Withdraws From UNESCO| publisher =US Department of State| date =October 12, 2017| access-date =October 13, 2017| archive-date =April 8, 2019| archive-url =https://web.archive.org/web/20190408053146/https://www.state.gov/r/pa/prs/ps/2017/10/274748.htm| url-status =live}} and is immediately followed by Israel.{{cite web|url=https://www.independent.co.uk/news/world/americas/us-politics/unesco-us-withdraw-israel-bias-trump-palestine-haram-al-sharif-temple-mount-latest-a7996791.html |archive-url=https://ghostarchive.org/archive/20220501/https://www.independent.co.uk/news/world/americas/us-politics/unesco-us-withdraw-israel-bias-trump-palestine-haram-al-sharif-temple-mount-latest-a7996791.html |archive-date=May 1, 2022 |url-access=subscription |url-status=live|title=US withdraws from Unesco over 'anti-Israel bias' |publisher= Independent.co.uk| date=October 12, 2017

| access-date =October 13, 2017}}{{cbignore}}

• October 14 – A massive blast caused by a truck bombing in Mogadishu, Somalia kills at least 587 people and injures 316 others.{{cite news|url=https://www.reuters.com/article/us-somalia-blast-toll/death-toll-from-somalia-truck-bomb-in-october-now-at-512-probe-committee-idUSKBN1DU2IC|title=Death toll from Somalia truck bomb in October now at 512: probe committee|work=Reuters|date=November 30, 2017|access-date=2017-12-01|archive-date=September 9, 2019|archive-url=https://web.archive.org/web/20190909184620/https://www.reuters.com/article/us-somalia-blast-toll/death-toll-from-somalia-truck-bomb-in-october-now-at-512-probe-committee-idUSKBN1DU2IC|url-status=live}}
• October 17 – Syrian Civil War: Raqqa is declared fully liberated from the Islamic State of Iraq and the Levant.
• October 25 – At the 19th National Congress of the Chinese Communist Party, Xi Jinping assumes his second term as General Secretary (China's paramount leader), and the political theory Xi Jinping Thought is written into the party's constitution.{{cite news | title=China formally lifts Xi Jinping's status to most powerful leader in decades | website=The Telegraph | date=October 24, 2017 | url=https://www.telegraph.co.uk/news/2017/10/24/china-lifts-xi-jinpings-status-powerful-leader-decades/ | access-date=December 30, 2017 | last1=Connor | first1=Neil | archive-date=December 27, 2017 | archive-url=https://web.archive.org/web/20171227191248/http://www.telegraph.co.uk/news/2017/10/24/china-lifts-xi-jinpings-status-powerful-leader-decades/ | url-status=live }}
• October 26 – At the level crossing of the Hanko–Hyvinkää railway line, a passenger train collided with an off-road truck of the Nyland Brigade in Raseborg, Finland; four people died and 11 were injured.{{Cite web |url=https://yle.fi/uutiset/osasto/news/conscript_acquitted_over_raseborg_level_crossing_crash/11691544 |title=Yle News: Conscript acquitted over Raseborg level crossing crash |date=December 10, 2020 |access-date=October 19, 2021 |archive-date=October 19, 2021 |archive-url=https://web.archive.org/web/20211019022945/https://yle.fi/uutiset/osasto/news/conscript_acquitted_over_raseborg_level_crossing_crash/11691544 |url-status=live }}[https://www.garda.com/crisis24/news-alerts/76401/finland-train-crash-in-raseborg-october-26 Finland: Train crash in Raseborg October 26] {{Webarchive|url=https://web.archive.org/web/20221031034630/https://crisis24.garda.com/alerts/2017/10/finland-train-crash-in-raseborg-october-26 |date=October 31, 2022 }} – GardaWorld
• October 27 – Based on the results of a previously held referendum, Catalonia declares independence from Spain,{{cite news |date=October 27, 2017 |title=Catalonia declares independence from Spain as political crisis deepens |url=https://edition.cnn.com/2017/10/27/europe/catalonia-independence-spain/index.html |work=CNN |access-date=October 27, 2017 |archive-date=November 6, 2017 |archive-url=https://web.archive.org/web/20171106105733/http://edition.cnn.com/2017/10/27/europe/catalonia-independence-spain/index.html |url-status=live }} but the Catalan Republic is not recognised by the Spanish government or any other sovereign nation.{{cite news |date=October 27, 2017 |title=Catalans declare independence as Madrid imposes direct rule |url=https://www.bbc.co.uk/news/world-europe-41780116 |work=BBC |access-date=October 27, 2017 |archive-date=December 4, 2020 |archive-url=https://web.archive.org/web/20201204112602/https://www.bbc.co.uk/news/world-europe-41780116 |url-status=live }}

• November 2 – A new species of orangutan is identified in Indonesia, becoming the third known species of orangutan as well as the first great ape to be described for almost a century.{{cite web | last=Gill | first=Victoria | title=New great ape species identified | website=BBC News | date=November 2, 2017 | url=https://www.bbc.com/news/science-environment-41848816 | access-date=December 30, 2017 | archive-date=June 21, 2018 | archive-url=https://web.archive.org/web/20180621032106/https://www.bbc.com/news/science-environment-41848816 | url-status=live }}
• November 3 – Syrian Civil War: both Deir ez-Zor in Syria and Al-Qa'im in Iraq are declared liberated from ISIL on the same day.{{cite web | title=Big losses for IS in Syria and Iraq | website=BBC News | date=November 3, 2017 | url=https://www.bbc.com/news/world-middle-east-41856330 | access-date=December 30, 2017 | archive-date=January 1, 2018 | archive-url=https://web.archive.org/web/20180101223648/http://www.bbc.com/news/world-middle-east-41856330 | url-status=live }}
• November 5
• The German newspaper Süddeutsche Zeitung publishes 13.4 million documents leaked from the offshore law firm Appleby, along with business registries in 19 tax jurisdictions that reveal offshore financial activities on behalf of politicians, celebrities, corporate giants and business leaders. The newspaper shared the documents with the International Consortium of Investigative Journalists and asked it to lead the investigation.{{cite web | last=Forsythe | first=Michael | title=Paradise Papers Shine Light on Where the Elite Keep Their Money | website=The New York Times | date=April 3, 2016 | url=https://www.nytimes.com/2017/11/05/world/paradise-papers.html | access-date=December 30, 2017 | archive-date=January 26, 2018 | archive-url=https://web.archive.org/web/20180126022426/https://www.nytimes.com/2017/11/05/world/paradise-papers.html | url-status=live }}
• Sutherland Springs church shooting: A gunman opens fire in a Baptist church in Sutherland Springs, Texas, United States, killing 26 people and injuring 20 more. It was the deadliest shooting in an American place of worship in modern history, surpassing the Charleston church shooting of 2015{{Cite news |url = https://www.thedailybeast.com/deadliest-church-shooting-in-american-history-strikes-sutherland-springs-texas |title = Deadliest Church Shooting in American History Kills at Least 26 |last = Weill |first = Kelly |date = November 5, 2017 |work = The Daily Beast |access-date = July 17, 2019 |url-status = live |archive-url = https://web.archive.org/web/20171106062833/https://www.thedailybeast.com/deadliest-church-shooting-in-american-history-strikes-sutherland-springs-texas |archive-date = November 6, 2017 |df = mdy-all}} and the Waddell Buddhist temple shooting of 1991.{{cite news|url=http://www.ky3.com/content/news/FAST-FACTS-Deadliest-mass-shootings-in-modern-US-history--455579613.html|title=Fast facts: Deadliest mass shootings in modern US history|date=November 6, 2017|publisher=KY3|location=Springfield, MO|url-status=live|access-date=July 17, 2019 |archive-url=https://web.archive.org/web/20171107164847/http://www.ky3.com/content/news/FAST-FACTS-Deadliest-mass-shootings-in-modern-US-history--455579613.html|archive-date=November 7, 2017}}
• November 12 – A magnitude 7.3 earthquake strikes the border region between Iraq and Iran leaving at least 530 dead and over 70,000 homeless.{{cite web | title=Iran-Iraq border quake kills hundreds | website=BBC News | date=November 13, 2017 | url=https://www.bbc.com/news/world-middle-east-41963373 | access-date=December 30, 2017 | archive-date=December 13, 2017 | archive-url=https://web.archive.org/web/20171213173728/http://www.bbc.com/news/world-middle-east-41963373 | url-status=live }}
• November 15
• Zimbabwean President Robert Mugabe is placed under house arrest, as the military take control of the country.{{cite news|last1=Moyo|first1=Jeffrey|last2=Onishi|first2=Norimitsu|title=Zimbabwe's Military, in Apparent Takeover, Says It Has Custody of Mugabe|url=https://www.nytimes.com/2017/11/14/world/africa/zimbabwe-mugabe-mnangagwa-chiwenga.html|access-date=November 16, 2017|work=NY Times|date=November 14, 2017|archive-date=December 24, 2017|archive-url=https://web.archive.org/web/20171224045734/https://www.nytimes.com/2017/11/14/world/africa/zimbabwe-mugabe-mnangagwa-chiwenga.html|url-status=live}} He resigns six days later, after 37 years of rule.{{cite news|title=Zimbabwe's President Mugabe resigns|url=https://www.bbc.co.uk/news/world-africa-42071488|access-date=November 21, 2017|work=BBC News|date=November 21, 2017|archive-date=June 23, 2020|archive-url=https://web.archive.org/web/20200623213751/https://www.bbc.co.uk/news/world-africa-42071488|url-status=live}}
• A Leonardo da Vinci painting, Salvator Mundi, sells for US$450 million at Christie's in New York, a new record price for any work of art.{{cite news|title='Leonardo da Vinci artwork' sells for record $450m|url=https://www.bbc.com/news/entertainment-arts-42000696|access-date=November 16, 2017|work=BBC News|date=November 16, 2017|archive-date=January 2, 2018|archive-url=https://web.archive.org/web/20180102164317/http://www.bbc.com/news/entertainment-arts-42000696|url-status=live}}
• The Argentinian submarine ARA San Juan suddenly vanished with 44 crew members on board whilst on a routine patrol in the South Atlantic. It would be found one year later wrecked {{convert|907|m|feet}} below the Atlantic Ocean.{{Cite news|url=https://www.bbc.com/news/world-latin-america-46248970|title=Argentina 'lacks means' to raise lost sub|date=2018-11-17|work=BBC News|access-date=2018-11-17|language=en-GB|archive-date=November 17, 2018|archive-url=https://web.archive.org/web/20181117211231/https://www.bbc.com/news/world-latin-america-46248970|url-status=live}}
• November 20 – Nature publishes an article recognising the high-velocity asteroid ʻOumuamua as originating from outside the Solar System, i.e. the first known interstellar object.
• November 22 – The International Court of Justice finds Ratko Mladić guilty of genocide committed in Srebrenica during the 1990s Bosnian War, the worst massacre in Europe since World War II. He is sentenced to life in prison.{{cite news|title=Ratko Mladic found guilty of genocide over Bosnia war|url=https://www.bbc.co.uk/news/world-europe-42080090|access-date=November 22, 2017|work=BBC News|date=November 22, 2017|archive-date=January 15, 2018|archive-url=https://web.archive.org/web/20180115194232/http://www.bbc.co.uk/news/world-europe-42080090|url-status=live}}
• November 24 – A mosque attack in Sinai, Egypt kills 305 worshippers and leaves hundreds more wounded.{{cite news|url=https://www.foxnews.com/world/egyptian-mosque-attack-death-toll-climbs-to-305/|title=Egyptian mosque attack death toll climbs to 305|date=2017-11-25|work=Fox News|access-date=2017-11-25|archive-date=January 21, 2018|archive-url=https://web.archive.org/web/20180121051822/http://www.foxnews.com/world/2017/11/25/egyptian-mosque-attack-death-toll-climbs.html|url-status=live}}
• November 27 – Start of the Honduran protests.{{cite news|date=2 December 2017|title=Honduras: posible fraude, muertos y mucha tensión|language=Spanish|trans-title=Honduras: possible fraud, deaths and great tension|publisher=ABC Color|agency=EFE|location=Tegucigalpa|url=http://www.abc.com.py/internacionales/honduras-posible-fraude-muertos-y-mucha-tension-1654877.html|accessdate=2 December 2017|archive-date=March 22, 2021|archive-url=https://web.archive.org/web/20210322112717/https://www.abc.com.py/internacionales/honduras-posible-fraude-muertos-y-mucha-tension-1654877.html|url-status=live}}

• December 5 – Russia is banned from the 2018 Winter Olympics in Pyeongchang by the International Olympic Committee, following an investigation into state-sponsored doping.{{Cite news|url=https://www.bbc.co.uk/sport/winter-sports/42242007|title=Russian doping: IOC bans Russia from 2018 Winter Olympics|date=December 5, 2017|work=BBC News|access-date=December 5, 2017|archive-date=December 5, 2017|archive-url=https://web.archive.org/web/20171205184249/http://www.bbc.co.uk/sport/winter-sports/42242007|url-status=live}}
• December 6 – The United States officially recognizes Jerusalem as Israel's capital.{{cite web|url=https://www.bbc.co.uk/news/world-us-canada-42259443|title=Jerusalem is Israel's capital - Trump|date=December 6, 2017|work=BBC News|access-date=December 6, 2017|archive-date=December 6, 2017|archive-url=https://web.archive.org/web/20171206184525/http://www.bbc.co.uk/news/world-us-canada-42259443|url-status=live}}
• December 9 – The Iraqi military announces that it has "fully liberated" all of Iraq's territory from "ISIS terrorist gangs" and retaken full control of the Iraqi-Syrian border.{{Cite web |last=Levenson |first=Eric |last2=Karadsheh |first2=Jomana |date=December 9, 2017 |title=Iraq is 'fully liberated' from ISIS, its military says |url=https://edition.cnn.com/2017/12/09/middleeast/iraq-isis-military-liberated/index.html |url-status=live |archive-url=https://web.archive.org/web/20180123123214/https://edition.cnn.com/2017/12/09/middleeast/iraq-isis-military-liberated/index.html |archive-date=January 23, 2018 |access-date=December 10, 2017 |website=CNN}}
• December 14 – The Walt Disney Company announces that it will acquire most of 21st Century Fox, including the 20th Century Fox film studio, for $66 billion.{{cite news|url=https://www.ft.com/content/c9635a99-8be6-33ed-9711-beb8c5bcc177 |archive-url=https://ghostarchive.org/archive/20221210/https://www.ft.com/content/c9635a99-8be6-33ed-9711-beb8c5bcc177 |archive-date=December 10, 2022 |url-access=subscription|title=Disney to buy 21st Century Fox assets in $66bn deal|website=Financial Times|date=December 14, 2017|last1=Garrahan|first1=Matthew}}
• December 22 – The UN Security Council votes 15–0 in favor of additional sanctions on North Korea, including measures to slash the country's petroleum imports by up to 90%.{{cite web|url=http://www.un.org/apps/news/story.asp?NewsID=58345|title=Security Council further tightens sanctions against DPR Korea|date=December 22, 2017|work=UN|access-date=December 23, 2017|archive-date=December 23, 2017|archive-url=https://web.archive.org/web/20171223022445/http://www.un.org/apps/news/story.asp?NewsID=58345|url-status=live}}{{cite web|url=https://www.bbc.co.uk/news/world-asia-42464011|title=North Korea: Trump praises latest UN sanctions over missiles|date=December 23, 2017|work=BBC News|access-date=December 23, 2017|archive-date=December 23, 2017|archive-url=https://web.archive.org/web/20171223041130/http://www.bbc.co.uk/news/world-asia-42464011|url-status=live}}
• December 24 – Guatemala follows in the footsteps of the United States by announcing that they will also move their Israeli embassy to Jerusalem, followed by Honduras and Panama two days later.{{cite web | last=Julian | first=Hana Levi | title=Honduras, Panama to Transfer Embassies to Jerusalem, Following US and Guatemala - The Jewish Press - 9 Tevet 5778 – December 26, 2017 - JewishPress.com | website=JewishPress.com | date=December 26, 2017 | url=http://www.jewishpress.com/news/us-news/honduras-panama-to-transfer-embassies-to-jerusalem-following-us-and-guatemala/2017/12/26/ | access-date=December 30, 2017 | archive-date=December 29, 2017 | archive-url=https://web.archive.org/web/20171229152747/http://www.jewishpress.com/news/us-news/honduras-panama-to-transfer-embassies-to-jerusalem-following-us-and-guatemala/2017/12/26/ | url-status=live }}

{{Main|Category:2017 births|Deaths in 2017}}

File:Nobel medal.png

• Chemistry – Jacques Dubochet, Joachim Frank and Richard Henderson
• Economics – Richard Thaler
• Literature – Sir Kazuo Ishiguro
• Peace – International Campaign to Abolish Nuclear Weapons
• Physics – Barry Barish, Kip Thorne and Rainer Weiss
• Physiology or Medicine – Jeffrey C. Hall, Michael Rosbash and Michael W. Young

• List of international years
• {{portal-inline|2010s}}

{{Reflist}}

{{Events by month links}}

{{DEFAULTSORT:2017}}