Heavy fighting erupted in northwestern Syria on Tuesday between a powerful jihadist organization and more moderate rebel groups, threatening to further weaken the opposition to President Bashar al-Assad in its biggest territorial stronghold. Rebel groups fighting under the Free Syrian...

 Chechen strongman Ramzan Kadyrov on Tuesday confirmed that troops from the mainly Muslim Caucasus region were serving as Russian military police in the war-torn Syrian city of Aleppo. Kadyrov wrote on Instagram that MP Adam Delimkhanov and Chechnya's chief mufti, Salakho-Khadzhi...

Thousands of Iraqi children are heading back to school in east Mosul after weeks of fighting and more than two years of extremist rule, the U.N. children's fund UNICEF said Tuesday. Iraqi forces launched a massive operation to recapture Mosul from ISIS 100 days ago and have ousted the...

Russia, Turkey and Iran on Tuesday were working on a statement to reaffirm a fragile ceasefire between Syrian warring parties that could agree to establishing a mechanism to observe its compliance and pave the way for a U.N.-led peace settlement. Delegations from the Syrian government...