Naval actions and covert operations (which included some of the naval actions) were conducted against North Vietnam prior to 1965. The first "real" official (offensive) action against North Vietnam was in 1965, when the US launched an AIR CAMPAIGN against North Vietnam, titled "Operation Rolling Thunder."
Against Communist North Vietnam's take over of the Republic of South Vietnam.
North Vietnam threatened South Vietnam. I.S.
None. Vietnam was a war against another nation (North Vietnam). Iraq is a police action in which law, order, and stability is trying to be established from withing the country. The US is NOT at war with Iraq.
Bombing North Vietnam
because it was north Vietnam against south Vietnam
Yes, it was. During the war, the American soldiers were not recognized by the North Vietnese, but by the most sheer luck. Had they been recognized, North Vietnam may have taken seriour action against the US.
North Vietnam/VC against the US/allies.
America fought against North Vietnam, in an unsuccessful attempt to defeat its invasion and conquest of South Vietnam.
Defending South Vietnam against Communist aggression from North Vietnam.
Rolling Thunder was the FIRST "air campaign" committed against NORTH Vietnam.
About one half of the American people.
North Vietnam (capital was Hanoi).