Faced with Soviet expansion that culminated in the Berlin blockade and the allied airlift, the U.S., Canada and ten Western European nations signed the North Atlantic Treaty of mutual defense on April 4, 1949. Greece and Turkey joined in 1952, West Germany in 1955. During its 31 years, NATO has survived a number of crises and events that, like the current one, have shaded and changed Europe's views of the U.S., and vice versa.
195O: The U.S. intervenes militarily in Korea after the Soviet-sponsored North invades the American-backed South. Other NATO countries under United Nations auspices provide support and troops.
1956: The French...