In August 1945, with American help, Nationalist troops moved to take the Japanese surrender in North China. The Soviet Union—encouraged to invade Manchuria to hasten the end of the war and allowed a Soviet sphere of influence there as agreed to at the Yalta Conference in February 1945—dismantled and removed more than half the industrial equipment left there by the Japanese. Although the Chinese had not been present at Yalta, they had been consulted and had agreed to have the Soviets enter the war, in the belief that the Soviet Union would deal only with the Kuomintang government. However, the Soviet presence in northeast China enabled the Communists to arm themselves with equipment surrendered by the withdrawing Japanese army.