A truly inane comment from another liberal who's apparently done very little reading on the war.
South Vietnam betrayed us?! That's just sick. I know you have no clue about any of this stuff, but, FYI, we've known for over a decade from disclosed/declassified North Vietnamese sources that the North Vietnamese acknowledged in their internal reports that South Vietnam's army often fought capably and tenaciously, that the American war effort was succeeding, that the losses from the Tet Offensive were horrendous and catastrophic, and that by 1971 the Communists had not only lost control of most of South Vietnam but no longer even had access to most of South Vietnam's population because they had been pushed into small pockets in sparsely populated areas.
These facts are documented and discussed in several scholarly works, such as Dr. Mark Moyar's books Triumph Forsaken and Triumph Regained, Dr. George Jay Veith's books Drawn Swords in a Distant Land: South Vietnam's Shattered Dreams and Black April: The Fall of South Vietnam, 1973-1975, and Major General (USA, Ret.) Ira Hunt's book Losing Vietnam: How America Abandoned Southeast Asia.
I should add that some so-called "libertarians" likewise repeat falsehoods and distortions about the Vietnam War. That said, the vast majority of those who smear our noble effort in the Vietnam War are liberals.