Vietnam was a horrible mistake.
The US should have learned from it, but didn't.
Iraq 1 and Iraq 2 were also mistakes, and of course, Afghanistan was a 20 year mistake.
It was possible to beat the draft without even going to Sweden or Canada.
I know because I managed to do it.
Eventually, they could not draft enough suckers to fight, and they had to get out.
MacNamara knew it was unwinnable, LBJ knew as well. Then Walter Cronkite spilled the beans, Kent State and Jackson State happened and they ran out of suckers.