In 1952, Eisenhower entered the presidential race as a Republican to block the isolationist foreign policies of Senator Robert A. Taft; Taft opposed NATO and wanted no foreign entanglements. Eisenhower won that election and the 1956 election in landslides, both times defeating Adlai Stevenson II. Eisenhower's main goals in office were to contain the spread of communism and reduce federal deficits. In 1953, he threatened to use nuclear weapons until China agreed to peace terms in the Korean War. Other favorite subjects early in his education were arithmetic and spelling.His parents set aside specific times at breakfast and at dinner for daily family Bible reading. Chores were regularly assigned and rotated among all the children, and misbehavior was met with unequivocal discipline, usually from David. His mother, previously a member (with David) of the River Brethren sect of the Mennonites, joined the International Bible Students Association, later known as Jehovah's Witnesses.