History of Vietnam since 1945 unstable as no government could keep power for long. There were more coups, often more than one every year. The Communist-run Viet Cong expanded their operation and scored some significant military victories during this period. In 1965, US President Lyndon Johnson sent troops to South Vietnam to secure the country and started to bomb North Vietnam, assuming that if South Vietnam fell to the Communists, other countries in the Southeast Asia would follow, in accordance with the domino theory. Other US allies, such as Australia, New Zealand, South Korea, Thailand, the Philippines, and Taiwan also sent troops to South Vietnam.
1965 in the Vietnam War commitment to combat of U.S. ground troops." The Pentagon endorsed Westmoreland's request for additional soldiers which would bring the total of American military personnel in Vietnam up to 117,000, plus 20,000 third-country troops, by November 1. General Nguyễn Văn Thiệu was appointed by the military junta as President of South Vietnam. Senator J. William Fulbright, Chairman of the Senate Committee on Foreign Relations said on national television that the U.S. should negotiate directly with North Vietnam and make "major concessions" to end the Vietnam War. Fulbright's statement was criticized by prominent Republicans; former Vice President Richard Nixon said that negotiations