that was the act of overthrowing the actions of his father, not some long term dynastical plan.

Yes, that’s how dynasties work. Inheriting political power produces stupid results.

Also worth noting that we backed Saddam Hussein through the Iran-Iraq war. You can’t pick out this or that middle eastern conflict the US has been a part of and declare it “the good one”. We’ve been meddling for more than half a century. It’s silly to act though each individual event just happens, as if shorn free from the consequences of the prior one.