"I don’t think there’s much in the way of unanticipated side effects that are going to be bad there," he continued. "We could kill a lot of very bad guys."
Kristol acknowledged that ISIS would likely try to "kill as many Americans as they can when they get to that, and they're getting to that already with the ones they've captured over there." It was an apparent reference to the ISIS killing of journalist James Foley last week.
In the video of Foley's death, his masked killer said that the murder was the consequence of the U.S. military launching air strikes against ISIS. After killing Foley, his killer then brought another captured American journalist, Steven Joel Sotloff, in front of the camera and warned President Barack Obama that "the life of this American citizen... depends on your next decision."