The document summarizes the key events and developments of the early Cold War between 1945-1960. It describes the ideological struggle between the Soviet/Eastern Bloc who wanted to spread communism worldwide, and the US/Western democracies who sought to contain communism. This led to espionage, an arms race, proxy wars, and the bipolarization of Europe between NATO and the Warsaw Pact. The Cold War was characterized by conflicts over Germany, an escalating nuclear arms race, containment efforts in Asia including the wars in China and Korea, and tensions with the USSR under Eisenhower including the U-2 incident. Cuba also became involved after Fidel Castro took power and formed an alliance with the Soviet Union.