Cannot Escape Raqqa North News Today

Theres no longer any doubt. the amount of it i dont want to get into. we dont reveal some of that detail because we dont want to reveal how were finding out. >> meantime, fox has learned from senior u.s. defense officials that the isis capitol raqqa has been surrounded by u.s.-backed troops. isis fighters cannot escape raqqa north of the euphrates river. theres a small corridor that others are using. fox has learned that isis moved its capitol and two months ago, isis leaders set up the bureaucr...

Agreement. and its statement that it had removed them all. theres no longer any doubt the amount of it i dont want to get into right now. we dont reveal some of that detail because we dont want to reveal how were finding out. >> reporter: fox learned from senior u.s. defense officials that the isis capital raqqa has been surrounded by u.s. backed troops. isis fighters cannot escape raqqa north of the euphrates. theres a small corridor others are using to leave the city. fox has also learned isis...