We actually won that war. There was a sign peace agreement, the Paris Peace Accord, signed on January 27, 1073. But when the democrats took control of congress they defunded the effort required to assist South Vietnam in keeping North Vietnam in check. Once North Vietnam realized what congress had done, they moved with all haste to overrun South Vietnam. We won the war, the democrats reneged and essentially gave North Vietnam the victory. Not at all unlike what Obama did with Iraq in pulling out all our troops and assistance after we had won that war. In the case with Vietnam we won the war but the democrats simply turned the South over to the North and walked away.
Once the US tucked tail and ran from South Vietnam ARVN was no longer an effective fighting force. The South Vietnamese government and its military were corrupt beyond recovery and no amount of money could have saved the issue. NVA were waiting for the most opportune moment to strike and they took it.
The primary problem with the US government both then and now is to attempt to resolve a problem by throwing money at it. If money fails, then everyone cries, "how terrible." At that point the military is called in. The money leaks away like water through a sieve and though our military can win battles it can no longer win a war. This is due to inept leadership within the ranks and to our government which became politically incoherent following Nov. 22, 1963.
The primary axiom of WAR tells us that an army holding the field following a fight is the declared winner.
Following the fall of Saigon in 1975, the NVA held the field. This is an undisputed fact of history. Politically confused Americans may deny the historic record, but it is fact nonetheless.
Failure of the US to win a war is also true for Korea, Saudi Arabia, Bahrain, Egypt, Syria, Iraq & Afghanistan. Currently there are at least a half dozen other small wars going on the outcome of which has not yet been decided.
Americans are like sheep.
When led to green pastures, we follow.
When led to shearing, we follow.
When led to the butcher, we follow.
We have turned our collective backs upon God and as a result we will not be blessed in most of the things we try to do - including aggression upon other lands and nations.
that's me, hollering from the choir loft...