China.
All were officially neutral.
There no longer is a North Vietnam, North Vietnam and South Vietnam were joined together after the Vietnam War.
North Vietnam was controlled by communists.
Most likely their neighbors; Cambodia/Laos.
the conflict in North Vietnam
See the website on "Vietnam". But be advised, there was NO "North Vietnam" after the war ended...Just VIETNAM.
North Vietnam was created in 1954.
North Vietnam ended in 1976.
Afghanistan, Bhutan, India, Kazakhstan, Kyrgyzstan, Laos, Mongolia, Myanmar, Nepal, North Korea, Pakistan, Russia, Tajikistan, and Vietnam
North Vietnam won the war.
India had their own problems with their neighbors.
South Vietnam's surrender to North Vietnam is what ended the Vietnam War. The North Vietnamese had the goal of Vietnamese Unification and the surrender of South Vietnam in 1975 allowed them to achieve that objective.