Donald Trump ratcheted up his anti-Islamic State rhetoric another notch Wednesday morning, remarking in an interview that if he were president, he would "take out their families" and "knock the hell out of" the terrorist group.

“We have a president that doesn’t know what he is doing," the Manhattan businessman said in an interview with "Fox and Friends."

On concerns that targeting ISIL would result in collateral damage, Trump said, "I would do my best, my absolute best."

But in addition to targeting the terrorists in ISIL, their families should also be killed, he said, adding that one of the reasons why they are so effective is that they are using civilians as "shields," calling it one of the reasons the United States has been "so ineffective."

"It's a horrible thing. They're using them as shields. But we're fighting a very politically correct war. And the other thing is with the terrorists, you have to take out their families," he explained. "They, they care about their lives. Don’t kid yourself. But they say they don’t care about their lives. You have to take out their families.”

Read more: http://www.politico.com/story/2015/12/trump-kill-isil-families-216343#ixzz3tBXwZJXx