1968 in the Vietnam War Adams' iconic image of South Vietnamese General Nguyễn Ngọc Loan's execution of a Viet Cong operative was taken in 1968. The year also saw Walter Cronkite's call to honourably exit Vietnam because he thought the war was lost. This negative impression forced the US into the Paris peace talks with North Vietnam. US troop numbers peaked in 1968 with President Johnson approving an increased maximum number of US troops in Vietnam at 549,500. The year was the most expensive in the Vietnam War with the American spending US$ (US$ in 2019) on the war. The year also became the deadliest
1962 in the Vietnam War military involvement in South Vietnam, provided that the government did not include President Diệm. That same month, North Vietnamese official Lê Duẩn instructed the leadership of the Viet Cong to avoid escalating the war by attacking cities as that might cause the United States to intervene in the war. The National Liberation Front in South Vietnam proposed to end the war in South Vietnam with a ceasefire, the withdrawal of American soldiers, and the creation of a coalition government of all factions pending elections. South Vietnam would become a neutral country, as were Cambodia and Laos, guaranteed by international treaty.