As for 'Nam, we won that when the NVA sued for peace after operation Linebacker II, but the (D) led 1975 congress abandoned it to the commies... with disastrous results.
Problem with Vietnam is that we that treaty had been on the table for 6 years, ever since LBJ stopped bombing in his “show of good faith”, which was really a demonstration of lack of will. The NVA sued for peace because they knew that while the bombing was kicking their butts it was a temporary demonstration of will that would fade. If we’d kept bombing them in 1967, or even a couple more weeks in 73/ 74 we wouldn’t have been signing a bad treaty the Dems could back out of. We could have won out right and signed a treaty that would have included a unified free Vietnam, instead of a divided destined to be communist Vietnam. We really lost the war in 1967 when with LBJ show of cowardice, then again after Tet when we decided they won it even though they destroyed themselves. Everything after that was formality and wasted lives.