The loss of Vietnam came only later, after we had essentially left the field and ceased to support the RVN logistically. Given that support, it's entirely possible that the RVN might still exist. If only Watergate hadn't happened...
Always remember who was responsible that monumental betrayal of our soldiers and our allies, one of the worst in human history: the media-industrial complex and its political arm, the Democrat Party.
Never forget, never forgive.