Al-Asad was morally in the right. He took power by overthrowing the corrupt western backed President who was selling his nation's resources without helping his citizenry.
American then suddenly invades and pretty much destroys every city in his country. When they're about to capture the capital city the US forces get rightfully nuked (and in the third game it's revealed Asad didn't even order the nuke).
He then got killed in a black operation by Brits for a crime he didn't commit.