By 1946, the Soviet Union had successfully spread communism through Eastern Europe, with Poland, Albania, Hungary, Romania, and Bulgaria all having communist governments loyal to Stalin.
Truman decided to respond with a policy known as the Truman Doctrine, which was a policy of containment designed to stop the further spread of communism.
Truman persuaded the US Congress to grant him four hundred million dollars of aid to help the situation in Greece and Turkey, making Turkey a strong ally of the United States and helping the monarchists in Greece.
General Marshall assessed the situation in Europe after World War Two, finding that the country's economies had been ruined and there was an extreme shortage of all supplies.
Germany was formally divided into two countries, the West, the Federal Republic of Germany, and the East, the German Democratic Republic, under Soviet control.