Watch Bret Baier's full interview with Defense Secretary Ash Carter on 'Special Report.'



Carter discusses the Obama administration's plan to take out the ISIS stronghold in Sirte, Libya -- the site of multiple U.S. airstrikes this week. "That's where ISIL is," Carter said about Sirte. "It is a town called Sirte, that is where they are concentrated. The targets are hit when Libyan forces identify them, I'm certain there will be more. For example, you will see Libyan forces with our intelligence support moving into a certain neighborhood. The ISIS guys will get in a truck or a tank to fight or leave, and we will see where they are, and that is the point at which we strike. We strike when we find targets. The reason we do it in Sirte is that is where ISIS is."



"Are we limited to that city by the Libyan government that we are working with?" asked Fox News host Bret Baier.



"It is where they are fighting right now," Carter said. "If we were asked by the Libyan government in the future, which may happen to help them in other ways and other places I'm sure we would be willing to consider that very fairly. Look, we're after them as well."



"Look," he explained. "Libyans don't like foreigners in their country. Libya has their own problems -- there is kind of a civil war there. So if we could get the Libyans to stop fighting each other over who is going to run the place, they would turn against ISIL."