Qatar signed an agreement Sunday to buy 24 Typhoon fighter jets from Britain, a second major defense deal signed by Doha during its lengthening diplomatic dispute with its neighbors. Qatari defense secretary Khalid bin Mohammed al-Attiyah and his British counterpart Michael Fallon...

Russia’s Defence Ministry on Sunday rejected allegations it had bombed U.S.-backed militias in Syria, saying its planes only targeted Islamic State militants and that it had warned the United States well in advance of its operational plans. U.S.-backed militias said they came under...

Syrian regime troops seized a suburb of the eastern city of Deir al-Zor on Sunday, tightening the noose around Islamic State, a Syrian military source said. The army pushed into the city this month with the help of Russian air power and Iran-backed militias, breaking an Islamic State...

The former al Qaeda branch in Syria has pledged to keep fighting government forces and their Russian and Iranian allies, and denounced ceasefire talks in Kazakhstan. Russia, Iran and Turkey agreed on Friday to deploy observers on the edge of a “de-escalation” zone in Syria’s Idlib...