Emile Antonio, a famous American political documentary director, is a famous anti-war documentary. The 1970 Oscar nomination for Best documentary is an absolute masterpiece, influencing the French New Wave generation. It is a documentary about the Vietnam War. The Vietnam War was a war between the Republic of Vietnam (South Vietnam) and the United States, the Democratic Republic of Vietnam (North Vietnam) and the Vietnamese National Liberation Front. The Vietnam War is the war with the largest number of casualties that the United States has participated in since World War II, and many people think that it is also a part of the Cold War and a "hot war" in the Cold War. Ho Chi Minh, the leader of North Vietnam who wants to reunify Vietnam, supports the National Liberation Front, a guerrilla group in the south, against Wu Tingyan's government in South Vietnam. The United States sent troops to help South Vietnam. The first American president to aid South Vietnam was Dwight Eisenhower; Kennedy began to support the war in Vietnam; and Johnson expanded the war out of control. During the Nixon administration, the United States gradually withdrew its troops from Vietnam because of the domestic anti-war wave. The army of the South Vietnamese government was destroyed by the North Vietnamese people's Army and the South Vietnamese people's Liberation Army, and Vietnam was finally unified.