The PRC U.N.Secu ·On June25,1950,N Yalu River across the 38th Paral raids.claimed that the masterminded the No Pyongyang President Truman's u Security Council me 38° of nine to zero that N Seoul accountable for the br Inchon ·The UN forces were American troops mad General Douglas Ma put in supreme comm PusanU.N. Security Council • On June 25, 1950, North Korea sent its forces across the 38th Parallel in reprisal for border raids. claimed that the Soviets had masterminded the North Korean attack. At President Truman’s urgent request, the U.N. Security Council met and concluded by a vote of nine to zero that North Korea was accountable for the breach of peace. • The UN forces were dispatched, of which American troops made up about 90 percent, and General Douglas MacArthur (1880–1964) was put in supreme command