What if USA didnt intervene when Saddam Hussein invaded Kuwait during the first gulf war ?

What if USA just sit idly by and didnt intervene beyond verbal protest when Saddam Hussein invaded Kuwait during the first gulf war?

So this means Saddam gets to keep kuwait and its oilfields. He would then become target saudi next and become a modern day Hitler.

What would happen next? And what would be the consequences for the world in such secaniro?

Would saddam become a modern day Hitler if he was not stop at kuwait?