CABRERA: What is being called the last push to eliminate ISIS in Syria. The U.S.-backed Syrian Democratic Forces are trying to push ISIS away from its last sliver of controlled territory there. CNN has an exclusive look at this operation. You can hear some of what's happening in the background. Our senior international correspondent, Ben Wedeman, is joining us now from eastern Syria, near the front lines of the ongoing fighting. Ben, set the scene for us. What are you seeing, what can you tell us?</s>BEN WEDEMAN, CNN SENIOR INTERNATIONAL CORRESPONDENT: Well, this has been going on now for four hours, this fairly constant bombardment of this town behind me. It is the last piece of territory controlled by the Islamic State. And the Syrian Democratic Forces, we are told by people who are monitoring it in a control room. have made good progress inside the town itself. They say they haven't run into much resistance from ISIS. They do believe there are still some civilians inside the tow. Earlier, they told us perhaps as many as 1,500 are still in there. What we see every day, dozens, sometimes hundreds of people either paying, bribing their way out of the town or sneaking their way out of the town. It's not clear how many people there are left. We are told that they expect more resistance as soon as the sun comes up. Because we know that those ISIS fighters still in the town behind me are some of the most battle hardened and ruthless among them. Even though we have also heard reports that there has been in fighting among the ISIS members, between those who, after weeks and weeks of bombardment, simply want to surrender and those, Ana, who want to fight to the death.</s>CABRERA: Ben Wedeman, in Syria, please stay safe. Thank you for bringing us that reporting. Coming up, the 2020 race heats up as Elizabeth Warren makes it official. But will questions about her heritage continue to haunt her? Be sure to join CNN's Laurie Segall as she talks exclusively with Facebook insiders. The CNN special report, "FACEBOOK AT 15, IT'S COMPLICATED," airs tomorrow night at 9:00 p.m. Eastern right here on CNN.
CNN Reports from Front Line of Battle Against ISIS in Syria.