In the first year of his presidency, 1952, he directed and arranged an armistice that brought peace to South Korea's border. Also during that year he made his famous "Atoms for Peace" speech at the United Nations General Assembly. The speech was in response to the fact that both the United States and Russia had both recently developed atomic bombs. The purpose of the speech was to promote applying atomic energy to peaceful uses, rather than using it for weaponry and warfare. In his efforts to stop the threat of an atomic war he met with Russian, British and French leaders at Geneva. Throughout his presidency Eisenhower managed Cold War-era tensions with the Soviet Union under the looming threat of nuclear weapons. On the homefront he maneuvered behind the scenes to discredit the rabid anti-Communist Senator Joseph McCarthy which escalated tensions between communism and the