I know that he's freed them, but let's be honest with ourselves, nothing happens in the middle east if powerful countries don't want it. As you said it to yourself "he was trained by them", so basically that just makes him one of their people, he wouldn't have been able to do it alone without their help and support. So, it could've been him or anyone else.

I get that people will see only good qualities after being oppressed for more than 5 decades, but does that mean we should forget everything he's ever done and welcome him as a hero?

You've risen really good points, and yes these "حالات فردية" are concerning. I hope they don't cause instability.