The US didn't invade South Vietnam. The Republic of South Vietnam asked for US help as they couldn't stem the Red Tide (communist infiltration).
The US never invaded Vietnam.
no they invaded us
1944
Iraq
If we invade North Vietnam, the chances would have been, China & stupid Soviets enter the war and start a WWIII.
The US chose NOT to deploy nuclear weapons. (The US did deploy nuclear weapons against Japan in WWII). The US chose NOT to invade North Vietnam. (The US did invade North Korea during the Korean War).
Nixon was AGGRESSIVE! He used US ground forces to invade & used the mighty B-52 Stratofortress heavy bomber to maximum effort against Hanoi (capital of North Vietnam).
The United States dropped napalm on the forces in Vietnam.
Yes; invade the north and/or use nukes.
President Eisenhower sent US advisers to Vietnam in 1955. President Kennedy sent US Special Forces (Green Beret) to Vietnam in 1961. President Johnson sent US regular forces to Vietnam in 1965.
Vietnam is a communist country. US forces are not allowed there. However, US veterans visit Vietnam as tourists every year.
General William Westmoreland