With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: The United States participated in the Vietnam War.
text_B: The Vietnam War -LRB- Chien tranh Viet Nam -RRB- , also known as the Second Indochina War , and known in Vietnam as Resistance War Against America -LRB- Khang chien chong My -RRB- or simply the American War , was a war that occurred in Vietnam , Laos , and Cambodia from 1 November 1955 to the fall of Saigon on 30 April 1975 .. Saigon. Battle of Saigon ( 1968 ). Cambodia. Cambodia. Laos. Laos. Indochina. Indochina. Vietnam. Vietnam. fall of Saigon. fall of Saigon. It was the second of the Indochina Wars and was officially fought between North Vietnam and the government of South Vietnam .. Indochina Wars. Indochina Wars. South Vietnam. South Vietnam. North Vietnam. North Vietnam. Indochina. Indochina. Vietnam. Vietnam. The North Vietnamese army was supported by the Soviet Union , China and other communist allies and the South Vietnamese army was supported by the United States , South Korea , Australia , Thailand and other anti-communist allies .. North Vietnamese. North Vietnamese. United States. Role of the United States in the Vietnam War. anti-communist. anti-communism. allies. Free World Military Forces. The war is therefore considered a Cold War-era proxy war .. Cold War. Cold War. proxy war. proxy war. The Viet Cong -LRB- also known as the National Liberation Front , or NLF -RRB- , a South Vietnamese communist common front aided by the North , fought a guerrilla war against anti-communist forces in the region , while the People 's Army of Vietnam , also known as the North Vietnamese Army -LRB- NVA -RRB- , engaged in more conventional warfare , at times committing large units to battle .. North Vietnamese. North Vietnamese. Viet Cong. Viet Cong. Vietnam. Vietnam. anti-communist. anti-communism. common front. common front. guerrilla war. guerrilla warfare. conventional warfare. conventional warfare. As the war continued , the military actions of the Viet Cong decreased as the role and engagement of the NVA grew .. Viet Cong. Viet Cong. U.S. and South Vietnamese forces relied on air superiority and overwhelming firepower to conduct search and destroy operations , involving ground forces , artillery , and airstrikes .. air superiority. Air supremacy. search and destroy. search and destroy. ground forces. Army. artillery. artillery. In the course of the war , the U.S. conducted a large-scale strategic bombing campaign against North Vietnam .. North Vietnam. North Vietnam. Vietnam. Vietnam. strategic bombing. strategic bombing. The North Vietnamese government and the Viet Cong were fighting to reunify Vietnam .. North Vietnamese. North Vietnamese. Viet Cong. Viet Cong. Vietnam. Vietnam. They viewed the conflict as a colonial war and a continuation of the First Indochina War against forces from France and later on the United States .. Indochina. Indochina. United States. Role of the United States in the Vietnam War. colonial war. colonial war. First Indochina War. First Indochina War. The U.S. government viewed its involvement in the war as a way to prevent a communist takeover of South Vietnam .. South Vietnam. South Vietnam. Vietnam. Vietnam. This was part of the domino theory of a wider containment policy , with the stated aim of stopping the spread of communism worldwide .. domino theory. domino theory. containment policy. containment policy. Beginning in 1950 , American military advisors arrived in what was then French Indochina.The Military Assistance Advisory Group , Indochina -LRB- with an authorized strength of 128 men -RRB- was set up in September 1950 with a mission to oversee the use and distribution of US military equipment by the French and their allies .. Indochina. Indochina. allies. Free World Military Forces. French Indochina. French Indochina. U.S. involvement escalated in the early 1960s , with troop levels tripling in 1961 and again in 1962 .. U.S. involvement escalated further following the 1964 Gulf of Tonkin incident , in which a U.S. destroyer clashed with North Vietnamese fast attack craft , which was followed by the Gulf of Tonkin Resolution , which gave the U.S. president authorization to increase U.S. military presence .. Gulf of Tonkin incident. Gulf of Tonkin incident. North Vietnamese. North Vietnamese. Gulf of Tonkin Resolution. Gulf of Tonkin Resolution. Regular U.S. combat units were deployed beginning in 1965 .. combat units. Military organization. Operations crossed international borders  : bordering areas of Laos and Cambodia were heavily bombed by U.S. forces as American involvement in the war peaked in 1968 , the same year that the communist side launched the Tet Offensive .. Tet Offensive. Tet Offensive. Cambodia. Cambodia. Laos. Laos. The Tet Offensive failed in its goal of overthrowing the South Vietnamese government , but became the turning point in the war , as it persuaded a large segment of the U.S. population that its government 's claims of progress toward winning the war were illusory despite many years of massive U.S. military aid to South Vietnam .. Tet Offensive. Tet Offensive. South Vietnam. South Vietnam. Vietnam. Vietnam. Gradual withdrawal of U.S. ground forces began as part of `` Vietnamization '' , which aimed to end American involvement in the war while transferring the task of fighting the communists to the South Vietnamese themselves .. ground forces. Army. Vietnamization. Vietnamization. Despite the Paris Peace Accord , which was signed by all parties in January 1973 , the fighting continued .. Paris Peace Accord. Paris Peace Accord. In the U.S. and the Western world , a large anti-Vietnam War movement developed as part of a larger counterculture .. Vietnam. Vietnam. anti-Vietnam War movement. Opposition to the U.S. involvement in the Vietnam War. counterculture. Counterculture of the 1960s. The war changed the dynamics between the Eastern and Western Blocs , and altered North -- South relations .. Eastern. Eastern Bloc. Direct U.S. military involvement ended on 15 August 1973 .. The capture of Saigon by the North Vietnamese Army in April 1975 marked the end of the war , and North and South Vietnam were reunified the following year .. Saigon. Battle of Saigon ( 1968 ). South Vietnam. South Vietnam. North Vietnamese. North Vietnamese. Vietnam. Vietnam. capture of Saigon. Fall of Saigon. The war exacted a huge human cost in terms of fatalities -LRB- see Vietnam War casualties -RRB- .. Vietnam War casualties. Vietnam War casualties. Vietnam. Vietnam. Estimates of the number of Vietnamese soldiers and civilians killed vary from 966,000 to 3.8 million .. Some 240,000 -- 300,000 Cambodians , 20,000 -- 62,000 Laotians , and 58,220 U.S. service members also died in the conflict , and a further 1,626 remain missing in action .. Cambodians. Khmer people. Laotians. Lao people
related.