President Truman's relief of General Douglas MacArthur with ammunition and to sail for Pusan. President Truman met with the Joint Chiefs of Staff and other advisors that day at Blair House and approved the actions already taken by MacArthur and Secretary of State Dean Acheson. At another meeting at Blair House held on the evening of 26 June, amid reports of a rapidly deteriorating situation in South Korea, Truman approved the use of air and naval forces against military targets south of the 38th parallel north. Subsequently, on 27 June, the United Nations Security Council passed Resolution 83, which recommended that "members of the United Nations furnish
President Truman's relief of General Douglas MacArthur was no requirement to do so. This began to change after the Spanish–American War, when American military forces started to be deployed overseas in the Pacific, Asia and the Caribbean for extended periods of time. The concept of the theater of war developed during World War II. At such a senior level of command, military and political issues tended to merge. As theater commander in the Southwest Pacific, MacArthur had been accountable to the Australian government as well as his own, making him, in President Roosevelt's words to him, "an ambassador as well as Supreme Commander." MacArthur's less than wholehearted