A failed US-sponsored invasion of Cuba in 1961 by anti-Castro forces who planned to overthrow Fidel Castro’s government.

A combination of moderate liberal policies that preserved the programs of the New Deal welfare state and forthright anticommunism that vilified the Soviet Union abroad and radicalism at home.

The basic US policy of the Cold War, which sought to keep communism within its existing geographic boundaries. Initially focused on the USSR and Eastern Europe, it came to include China, North Korea, and other parts of the developing world.

The 1962 nuclear standoff between the Soviet Union and the US when the Soviets attempted to deploy nuclear missiles in Cuba.

President Eisenhower’s theory of containment, which warned that the fall of a non-Communist government to communism in Southeast Asia would trigger the spread of communism to neighboring countries.

The president’s 1957 declaration that the US would actively combat communism in the Middle East.

The domestic policy agenda announced by Truman in 1949, which included civil rights, health care, and education reform, but was only partially successful in Congress.

Congressional committee especially prominent during the early years of the Cold War that investigated Americans who might be disloyal to the government or might have associated with communists or other radicals.

A program created in 1947 by Truman that permitted officials to investigate any employee of the federal government for “subversive” activities.

Military alliance formed in 1949 among the US, Canada, and Western European nations to counter any possible Soviet threat.

This president’s doctrine was the commitment to “support free peoples who are resisting attempted subjugation by armed minorities or by outside pressures,” and became the justification for US intervention into several countries during the Cold War.

A military alliance established in 1955, which included Albania, Bulgaria, Czechoslovakia, East German, Hungary, Poland, Romania, and the Soviet Union.