 Complete the following phrase:  North Korean forces experienced early successes, capturing the city of Seoul on June 28. Fearing the fall of the entire peninsula, General Douglas MacArthur, commander of U.S. forces in Asia, won Trumans approval to land U.S. troops on the peninsula. Rather than asking Congress for a declaration of war, Truman argued that the UN Resolution provided the presidency the constitutional power to deploy soldiers as a police action under the aegis of the UN. The intervention in Korea was widely popular in the United States at the time, and Trumans July 1950 request for 10 billion was approved almost uimously. By August 1950, U.S. troops pouring into South Korea, along with American air strikes, stabilized the front around the Pusan Perimeter. Responding to criticism over unreadiness, Truman fired Secretary of Defense Louis Johnson and replaced him with the George Marshall. With UN approval, Truman decided on a rollback policyconquest of North Korea. UN forces launched a counterattack, scoring a stunning surprise victory with an amphibious landing at the 