In case no one recalls the shame, a 'peace treaty' was signed with the North in 1973. The Commies used the cessation of hostilities to rebuild their army. In 1975, they invaded the South. The US had promised the South that in case of attack the US armed forces would be there to repel it. Till the Congress pulled the funding right out and you saw these videos.
3 million deaths later, the people who did this are still feeling smug over allowing this to happen.
Einstein said two things were infinite; the universe, and stupidity. He wasn't sure about the first, but he was certain about the second.