Lt. Col. Ralph Peters tonight gave a detailed plan to Bill O’Reilly on how he would fight terror.

“One: You accept that you are in a war. Two: You name the enemy, Islamist terrorists. Three: You get the lawyers off the battlefield […] you accept there will be collateral damage and you do not apologize for it. You do not nation build, you don’t try to hold ground. You go wherever in the world the terrorists are and you kill them, you do your best to exterminate them, and then you leave, and you leave behind smoking ruins and crying widows. If in five or 10 years, they reconstitute and you gotta go back, you go back and do the same thing, and you never, never, never send American troops into a war you don’t mean to win,” Peters said.

Col. David Hunt said that there must be economic pressure in addition to the military campaign that Peters detailed. Hunt said that just killing terrorists has not worked.

“Killing them is the only thing that works,” Peters fired back.

Hunt maintained that killing militants won’t stop terror as long as there’s state sponsorship of terrorism.

“I’ve got no issue with killing terrorists, I don’t care where they are. My point is it has not worked,” Hunt said.

Watch the full debate above.