NATO History, Structure and Collective Defense Explained
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NATO: Origins and Evolution
Established in 1949 via the Washington Treaty, the North Atlantic Treaty Organization (NATO) is a military alliance comprising 29 member states from Europe and North America. During its first period (1949–1989), the alliance primarily countered the Warsaw Pact, which was formed by the Soviet Union in 1955. Notably, in 1966, Charles de Gaulle withdrew France from NATO's integrated military command.
Post-Cold War Expansion
Following the fall of the Berlin Wall in 1989, NATO underwent significant expansion. While the alliance began with 12 founding countries, 17 additional nations have joined through subsequent enlargements:
- 1982: Spain
- 1999: Hungary, Poland, Czech Republic
- 2004: Bulgaria, Slovakia, Slovenia, Estonia, Lithuania,