The Vietnam War began in 1954 after France lost control of Vietnam to Ho Chi Minh's Viet Minh forces. Vietnam was divided at the 17th parallel, with Ho Chi Minh controlling North Vietnam and Ngo Dinh Diem controlling South Vietnam. The US initially provided aid to Diem's repressive government in South Vietnam and gradually increased military involvement over the following decades. Despite massive US bombing campaigns and deployment of over 500,000 troops, the US was unable to defeat the Viet Cong and North Vietnamese forces. Public opposition in the US grew over the course of the war. The US withdrew from Vietnam in 1973 following negotiations and the signing of a ceasefire agreement, and South Vietnam fell to Communist rule in 1975. The