Why do you think the Soviet Union opposed the Marshall plan?

The American program of Assistance to Europe after the Second World War, as a precondition for providing assistance, demanded the withdrawal of communists from the Governments of the signatory countries, opened the continuity of the plan with the "doctrine Truman "And for these reasons was unacceptable both for the USSR and the countries of Eastern Europe, which were part of the sphere of influence of the USSR. The American program of Assistance to Europe after the Second World War, as a precondition for providing assistance, demanded the withdrawal of communists from the Governments of the signatory countries, opened the continuity of the plan with the "doctrine Truman ". And for these reasons was unacceptable both for the USSR and the countries of Eastern Europe, which were part of the sphere of influence of the USSR.