symbolized the ideological conflict and physical boundary dividing Europe into two separate areas

a United States policy to stop Soviet expansion

an intergovernmental military alliance based on the North Atlantic Treaty

as an American initiative to aid Europe

 A military alliance of communist nations in eastern Europe.

is a military strategy to stop the expansion of an enemy

a state of political hostility between countries characterized by threats, propaganda, and other measures short of open warfare, in particular

the art or practice of pursuing a dangerous policy to the limits of safety before stopping, typically in politics.

 the Korean peninsula was divided along the 38th parallel, with the creation of communist-backed North Korea and the anti-communist Republic of South Korea.

was the first president of South Vietnam

A communist guerrilla organization which opposed the Cambodian government 

 North Vietnamese political leader: president of North Vietnam 1954–69.

a member of the communist guerrilla movement in Vietnam that fought the South Vietnamese government forces

speculated that if one country in a region came under the influence of communism, then the surrounding countries would follow in a domino effect

a policy of the Richard Nixon administration during the Vietnam War 

the developing countries of Asia, Africa, and Latin America

 an Iranian Mujtahid, revolutionary, politician, the founder of the Islamic Republic of Ira

 an organization of States that did not seek to formally align themselves with either the United States or the Soviet Union

 a Cuban politician and revolutionary who served as Prime Minister of Cuba

a Russian politician who led the Soviet Union during part of the Cold War

was the 36th President of the United States