CEVAP:

The first post-war ideological confrontation occurred in Europe. As the Soviet Union strengthened its presence through building satellite states in Eastern Europe, America adopted the policy of containment of the Soviet Union. First was the Truman Doctrine in 1947, designed to stop and reverse the expansion
of the Soviet Union, and then a year later the Marshall Plan, a financial aid program for Western European states whose infrastructure had been devastated in the war. The Marshal Plan aimed to restore a democratic Western Europe. Another initiative was launched in 1949 with the establishment of the North Atlantic Treaty Organization. It aimed to foster collaboration on security and defense issues among Western nations.