WordDefinitionPictureCold War Despite being allies in WW2, they became bitter rivals. They never confronted each other directly but their global competition led to many conflicts on every continent. Iron Curtain Barrier set by the Soviet Union that was over Eastern Europe and closing off the West. Trade and contact was disabled between East and West. Truman Doctrine A document or policy that Truman promised to help anyone fighting Communism. Truman offered aid to Greece and Turkey to fend off Stalin. Marshall Plan A successful policy by George Marshall that benefited the economy and sped the economic recovery of Western Europe and good will was created towards U.S. Berlin Airlift Containment Policy The response of the American leaders to Soviet domination by not attempting to overturn Communism wherever it existed, but also from preventing it from spreading. Mao Zedong Korean War Sputnik The launch of the first man-made satellite into space. It weighed 184 pounds and was a little bigger than a basketball.