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  1. North Atlantic Treaty Organization | NATO

    5 days ago · NATO is a defensive alliance of 32 countries from Europe and North America. Its mission is to defend its member countries and their one billion citizens.

  2. NATO - Wikipedia

    Founded in the aftermath of World War II, NATO was established with the signing of the North Atlantic Treaty in 1949. The organization serves as a system of collective security, whereby its …

  3. North Atlantic Treaty Organization (NATO) | Countries, …

    1 day ago · NATO is a military alliance that, at its establishment in 1949, sought to create a counterweight to Soviet armies stationed in central and eastern Europe after World War II. It …

  4. What to know about how NATO works as Trump threatens to take …

    5 days ago · NATO is built on the principle that an attack on any one of its ranks must be considered an attack on them all — the collective security guarantee enshrined in Article 5 of …

  5. NATO - U.S. Department of War

    Dec 17, 2025 · NATO is a transatlantic alliance of 32 like-minded North American and European countries securing peace since 1949. The alliance promotes democratic values and diplomacy …

  6. About NATO - U.S. Mission to the North Atlantic Treaty …

    Formed in 1949 with the signing of the Washington Treaty, NATO is a security alliance of 32 countries from North America and Europe. NATO’s fundamental goal is to safeguard the Allies’ …

  7. What Is NATO? - Council on Foreign Relations

    May 17, 2012 · Founded in 1949 as a bulwark against Soviet aggression, the North Atlantic Treaty Organization (NATO) remains, seventy-six years later, the pillar of U.S.-Europe military …

  8. EXPLAINER: What Is NATO? | Best Countries | U.S. News

    Jul 12, 2024 · Here’s everything you need to know about the history, membership and structure of NATO.

  9. NATO - dw.com

    6 days ago · The North Atlantic Treaty Organization was created in 1949, in the wake of World War II. The 32 members of the mutual defense alliance include much of Western Europe, the …

  10. How NATO works at a time of Trump's Greenland threats | AP News

    6 days ago · 1 of 8 | NATO was founded in 1949 to counter the threat posed to European security by the Soviet Union during the Cold War. Now, some say the credibility of the world’s biggest …