military said Friday a helicopter raid led by its forces in northeast Syria left senior ISIS leader Hamza al-Homsi dead and four American service members and a working dog wounded. Despite their defeat in Syria in March 2019, ISIS sleeper cells still conduct attacks around Syria and Iraq where they once declared a "caliphate. In October, the leader of ISIS, Abu al-Hassan al-Hashimi al-Qurayshi, was killed in battle with Syrian rebels in southern Syria