Iran-backed group kills U.S. allies in Syria amid high-stakes tit-for-tat

Read MoreAn Iran-backed militia says it hit a base in Syria, killing U.S.-allied Kurdish fighters amid a high-stakes exchange of fire being fueled by the Israel-Hamas war.An Iran-backed militia says it hit a base in Syria, killing U.S.-allied Kurdish fighters amid a high-stakes exchange of fire being fueled by the Israel-Hamas war.