Many Americans and some foreigners played a positive role in the positive regime change in Iraq, and Perle was among them. That's all I'm crediting him for. And, since conditions have improved there due to the American effort (with a relatively small amount of assistance from the Brits and other allies), I see nothing preposterous for Perle to do this oil thing, unless you can show me that he is engaging in some form of blatantly corrupt activity.
You forgot to add, "Duh."