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.
South Korea in the Vietnam War second half. Corruption did occur in which US-issued weapons were re-directed and sold to Korean ships for re-sale to the Korean government and supplementing the arsenal of Korean forces stationed in Korea, whom were still given M1 Garand rifles instead of the newer-issue M16 rifle given out to ARVN and ROK forces in South Vietnam The withdrawal process had negatively impacted Korean-US relations, despite economic benefits gained, with Nixon and Secretary of Defense Melvin Laird considering simultaneous withdrawal from both Korea and Vietnam. Due to Vietnamization US troops begun withdrawing since 1970, which had caused disagreement with the South Korean