BEIRUT -- Even as internationally backed forces chip away at ISIS-held territory in Syria, Iraq and Libya, the militants have demonstrated a stubborn resilience this week in the face of recent ...

Syrian rebels says joint operations with the U.S. against ISIS have stopped because of the threat of Turkish attack, and ISIS fighters may escape from prison.

Of the roughly 10,000 adult male detainees accused of fighting for ISIS, about 5,000 are Syrian; 3,000 are Iraqi; and 2,000 come from some 60 other countries, officials said.

Iraqi nationals had been repatriated from the al-Hol camp in northeastern Syria, with 10,000 already returning to their homes in Iraq.

The Syrian military and the U.S.-backed Syrian Democratic Forces have announced sweeping gains against the Islamic State militant group (ISIS) in the last of its major hideouts in eastern ...