The Caliphate is no different.
Pumping oil is better than directly taxing the peeps.
Bomb the pumping stations. Deprive ISIS of a million or more a day.
Sure there, State Dept pajama boy, that's some big talk.
You can't (or don't want to) control money trails for the Mafia, drug runners, human smuggling, gamblers, North Korean printing presses or a host of other illicit flows.
And you think that you will shut anything down in the M.E., when many on the White House and State Dept team are on the ISIS side?
Just no desire to do so from the top.