How did Truman use the foreign policy of Containment in response to the Soviet "betrayal of Yalta. (concerning the reconstruction plan for Germany)? Make your answer one sentence.

Truman implemented the policy of Containment by spearheading the Marshall Plan to provide economic aid to Western Europe as a way to counter Soviet influence and prevent the spread of communism in the aftermath of the Soviet Union's refusal to adhere to the Yalta agreements regarding the reconstruction of Germany.

shorter

Truman implemented the Marshall Plan in response to the Soviet betrayal at Yalta to contain communism and rebuild Western Europe.