NATO said it was prepared to send troops to Turkey to defend its ally after violations of Turkish airspace by Russian jets bombing Syria and Britain scolded Moscow for escalating a civil war that has already killed 250,000 people. Officials at the U.S.-led alliance are still...

Senior U.S. lawmakers have begun probing possible intelligence lapses over Moscow’s intervention in Syria, concerned that American spy agencies were slow to grasp the scope and intention of Russia’s dramatic military offensive there, U.S. congressional sources and other officials...

At least ten Yemeni civilians were killed when a rocket hit a house in a village in the southwestern province of Dhamar on Thursday and was most likely to have been fired by Saudi-led coalition jets, residents said. Arab coalition warplanes have been responsible for several mass...

Syrian regime forces and allied militia backed by Russian airstrikes launched an offensive against rebels in the Ghab Plain in western Syria Thursday, the Britain-based Syrian Observatory for Human Rights and a rebel fighting there said. Rebel groups led by the dominant Ahrar al-ShamIslamic...