 Complete the following phrase:  Personal relations between the two men grew strained, particularly when Truman felt that Byrnes was attempting to set foreign policy by himself and to inform the President only afterward. An early instance of the friction was the Moscow Conference in December 1945. Truman considered the successes of the conference to be unreal and was highly critical of Byrness failure to protect Iran, which was not mentioned in the final communiqué. I had been left in the dark about the Moscow conference, Truman told Byrnes bluntly. In a subsequent letter to Byrnes, Truman took a harder line in reference to Iran: Without these supplies furnished by the United States, Russia would have been ignominiously defeated. Yet now Russia stirs up rebellion and keeps troops on the soil of her friend and ally Iran. .. Unless Russia is faced with an iron fist and strong language another war is in the making. Only one language do they understand... I do not think we should play compromise any longer... I am tired of babying the Soviets. That led to the 