I say just destroy the oil fields.
Cut off that flow of money to ISIS.
It’s going to be long time before Iraq is stable enough for anybody to want to invest there.
I’m not sure destroying the oil fields is the answer. I think there is a way Trump could stick to his long held talking point of “seizing the oil” and make it sound less like we are a colonial power coming in and seizing resources.
He could just say something like “The US will seize rather than destroy the oil that is funding terrorists and turn it over to responsible groups or the host country once it can be guaranteed that the proceeds won’t go to terrorists. In the meantime, we will protect the assets of the nation this oil resides in and temporarily use the funds generated to defeat the terrorists which threaten the region”.
If he said something like that, I’d think it would achieve his policy end without making us sound like invaders coming to steal Muslim oil (which would alienate even our allies in the area).