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.
People's Army of Vietnam the U.S. Army completely. Our intentions were to fight a long time and cause heavy casualties to the United States, so the United States would see that the war was unwinnable and would leave. During the Vietnamese Lunar New Year Tết holiday starting on 30 January 1968, the PAVN launched a general offensive in more than 60 cities and towns throughout south of Vietnam against the US Army and Army of the Republic of Vietnam-(ARVN), beginning with operations in the border region to try and draw US forces and ARVN troops out of the major cities. In sequential coordinated attacks,