There is a great deal of misunderstanding about the Vietnam War.
For one thing, WE WON THE F-ING WAR! The Paris Peace Accords signed by the commies ended the war and THEY LOST. Nixon bombed the sh*t out them forcing them to surrender their efforts to subjugate the South and forcing them to sign the peace agreement in 1973. After winning, we removed nearly all our troops, got our prisoners returned, and guaranteed we would support the South should the commies start their aggression again.
But, a funny thing happened in 1974. The Dems in Congress refused to give aid to the South...and then that other funny thing happened...WATERGATE, making Nixon unable to help the South. Ford begged the Dems to support our ally, honor our agreement and prevent the mass murder that ensured. But, they said F-you.
What most Americans do not know is the Vietnam War was a betrayal by the Dem Party that should never be forgotten or forgiven. And the irony is the Dem Party started the war....
Another ironic thing is Vietnam is now a capitalist nation. Why the hell did they cause all that death, destruction, and suffering only to drop communism and accept capitalism? I will tell you why. Because the stinking commie dictator Ho Chi Minh was only concerned with gaining power...at all costs...
This is a very good and short explanation by Bruce Herschensohn....
http://www.prageruniversity.com/Wisdom-of-the-Masters/How-the-Vietnam-War-Was-Won-and-Lost.html