Ask the Chatbot Games & Quizzes History & Society Science & Tech Biographies Animals & Nature Geography & Travel Arts & Culture ProCon Money Videos
North Atlantic Treaty Organization
References & Edit History Quick Facts & Related Topics
Images
North Atlantic Treaty Organization North Atlantic Treaty Organization: members and partners North Atlantic Treaty Member states of NATO NATO and the Warsaw Pact Kosovo conflict flag-raising ceremony marking the accession of the Czech Republic, Hungary, and Poland to NATO Jerzy Buzek, Miloš Zeman, Javier Solana, and Viktor Orbán at a ceremony marking the accession of the Czech Republic, Hungary, and Poland to NATO Volodymyr Zelensky during the Russian invasion of Ukraine Magdalena Andersson and Sanna Marin
For Students
default image
NATO summary
Quizzes
Yellow transportation sign with ASAP (as soon as possible) on violet color sky background. (acronyms)
Figure Out the Acronyms ASAP Vocabulary Quiz
Secretariat Building at United Nations Headquarters with Members States' flags flying in the foreground, United Nations Headquarters, New York City, New York. (photo dated 2017)
Global Governance Quiz
Encyclopaedia Britannica thistle graphic to be used with a Mendel/Consumer quiz in place of a photograph.
43 Questions About Politics (Mostly in the United States) Compiled from Britannica’s Quizzes
Related Questions

North Atlantic Treaty Organization: Facts & Related Content

verifiedCite
While every effort has been made to follow citation style rules, there may be some discrepancies. Please refer to the appropriate style manual or other sources if you have any questions.
Select Citation Style
Share
Share to social media
URL
https://www.britannica.com/facts/North-Atlantic-Treaty-Organization

News •

Trump's appointment of envoy to Greenland sparks new tension with Denmark • Dec. 22, 2025, 7:23 PM ET (AP)
Starlink in the crosshairs: How Russia could attack Elon Musk's conquering of space • Dec. 22, 2025, 12:08 PM ET (AP)
Trump announces he's appointing Louisiana Gov. Jeff Landry to serve as US special envoy to Greenland • Dec. 21, 2025, 11:47 PM ET (AP)
Putin tells his annual news conference that the Kremlin's military goals in Ukraine will be met • Dec. 19, 2025, 9:30 AM ET (AP)
Kremlin envoy set to visit Miami for talks on US peace plan for Ukraine • Dec. 18, 2025, 8:16 PM ET (AP)

Facts

Also Known As NATO
Date August 24, 1949 - present
Areas Of Involvement defense • How does a country become a member of NATO?
Related People Dwight D. Eisenhower • Harry S. Truman • Konrad Adenauer • Mark Rutte • Joseph Dunford • John Shalikashvili • Eric K. Shinseki • Javier Solana • Ernest Bevin • Dean Acheson • Jaap de Hoop Scheffer • Rick Hillier • Willy Claes • Peter Carington, 6th Baron Carrington • Alcide De Gasperi

Did You Know?

  • No country that has joined NATO has ever opted to leave it.
  • The Russian occupation of the Crimean Peninsula in 2014 prompted NATO to cease cooperation with Russia.

Photos

North Atlantic Treaty Organization
North Atlantic Treaty Organization: members and partners
North Atlantic Treaty
NATO and the Warsaw Pact
Kosovo conflict
flag-raising ceremony marking the accession of the Czech Republic, Hungary, and Poland to NATO
Jerzy Buzek, Miloš Zeman, Javier Solana, and Viktor Orbán at a ceremony marking the accession of the Czech Republic, Hungary, and Poland to NATO
Volodymyr Zelensky during the Russian invasion of Ukraine
Magdalena Andersson and Sanna Marin
North Atlantic Treaty Organization
See All Images and Interactives →

Related Topics and References

Topics
Dig Deeper: More Articles That Discuss This Topic

Related Quizzes

Secretariat Building at United Nations Headquarters with Members States' flags flying in the foreground, United Nations Headquarters, New York City, New York. (photo dated 2017)
Global Governance Quiz
Yellow transportation sign with ASAP (as soon as possible) on violet color sky background. (acronyms)
Figure Out the Acronyms ASAP Vocabulary Quiz
Encyclopaedia Britannica thistle graphic to be used with a Mendel/Consumer quiz in place of a photograph.
43 Questions About Politics (Mostly in the United States) Compiled from Britannica’s Quizzes