A U.S.-backed coalition of Kurdish and Arab rebels say they’ve made significant advances against fighters for the Islamic State and are now closing in on the terror group’s stronghold of Raqqa in Syria.

The Syrian Democratic Forces (SDF) announced on Sunday that after heavy clashes its fighters have managed to push ISIS from Suweydiya al-Kabirah, a town west of Raqqa on the northern bank of the Euphrates River. The Syrian Observatory for Human Rights reported that U.S special forces and coalition fighter jets also took part in the battle, which allowed the rebels to move closer to the strategic Euphrates Dam near Raqqa.

Official SDF social media accounts released a video showing a group of three fighters purportedly belonging to the Islamic State and underage, who were captured during the battles. The three, all armed and dressed in military attire, surrender, are handcuffed and then led away by the SDF fighters.

Another video from the SDF purports to show people who lived in areas where ISIS had ruled, saying they’d been humiliated and persecuted by the jihadists. “We suffered from ISIS in every way,” says a bearded man dressed in a Looney Tunes sweatshirt. He said under ISIS rule, men weren’t allowed to talk to women and had to grow out their beards. In another video, women say they feel secure now after living in “fear, humiliation, and horror” under ISIS.

Colonel John Dorrian, spokesman of the U.S. Operation Inherent Resolve said last week that since the SDF launched its operation in Raqqa, the fighters have retaken over 3,000 square kilometers of terrain from ISIS. “They’ve cleared the entire area east of the Euphrates and northwest of Raqqa, displaying tactical skill by switching back and forth between the northern and western advancements,” Dorrian said.

The USA TODAY said the U.S. Air Force is increasing airdrops of weapons and ammunition to opposition forces closing in on Raqqa, and conducted 16 airdrop missions in Syria during 2016, including six in December.

The Wall Street Journal reported that the U.S-led coalition in Syria has put together an Arab force said to be large enough to move into Raqqa. However, that campaign is unlikely to begin any time soon, the Journal reports, because of worsening tensions between Ankara and Washington. It is also unclear whether President Donald Trump will adhere to this plan as he and his administration begin their first week in office.