A Russian air strike has killed around 40 Islamic State fighters, including four senior commanders, near the eastern Syrian city of Deir al-Zor, Russia’s defense ministry said on Friday. The strike, carried out by Su-34 fighter-bombers and Su-35 fighters, came after an intelligence...

Syria’s army said Israel targeted one of its positions in Hama province early on Thursday, which a war monitor said was a branch of the government agency accused by the U.S. of producing chemical weapons. The army statement said the airstrike killed two people and caused material...

 The Syrian army and its allies are fighting to secure a corridor to troops in Deir al-Zor, a day after they smashed through Islamic State lines to break the jihadist siege. The army reached Deir al-Zor city on Tuesday in a days-long thrust that followed months of steady advances...

Syrian forces have used chemical weapons more than two dozen times during the country's civil war, including in April's deadly attack on Khan Sheikhoun, U.N. war crimes investigators said on Wednesday. A government warplane dropped sarin on the town in Idlib province, killing more than...