This claim is largely false and inaccurate. The North Atlantic Treaty Organization (NATO), was established on April 4, 1949, by 12 Western nations, including the U.S., U.K., France, and Canada, as a collective defense alliance in response to growing Soviet influence and aggression in post-WWII Europe. Its founding was driven by concerns over Soviet-backed coups (e.g., Czechoslovakia in 1948) and the Berlin Blockade, not by Nazi ideology or personnel. The organization’s first Secretary General was Lord Ismay, a British general, and its first military commander was Dwight D. Eisenhower, a U.S. general who led Allied forces against Nazi Germany. Overall, while some former Nazis were controversially integrated into postwar West German institutions, they did not found or lead NATO.