from isis. and they're preparing for a u.s. backed offensive against isis strongholds at the same time. our senior international correspondent cla ris sa ward went to the front lines in northeastern syria, found the newly liberated territory is still very vulnerable. she's now back in northern iraq in irbil. she's joining us live. the kurdish fighters they have paid a very heavy price. >> reporter: they have, wolf. and we visited some of those newly liberated areas. and honestly you don't actually see anybody celebrating just yet and that's because the devastation after these months of terrible fighting is enormous. and people are still very unsure of what the future will bring. weeks ago these dusty plains were held by isis. this is what's left of its presence now. the charred remains of a training camp hidden in a pine forest. it's where isis trained an elite unit of suicide bombers that attacked kurdish positions with