At the same time, the growing popularity of the Tudeh Party also worried Mohammad Reza, who felt there was a serious possibility of a coup by the Tudeh. In June 1946, Mohammad Reza was relieved when the Red Army pulled out of homeland. In a letter to the Azerbaijani Communist leader Ja’far Pishevari, Stalin stated that he had to pull out of Iran as otherwise the Americans would not pull out of China, and he wanted to assist the Chinese Communists in their civil war against the Kuomintang.