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 ...

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 ...

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.