Syria's rebel and opposition groups are trying to forge a common stance over negotiations to end the civil war but the absence of some prominent activists and a main Kurdish force from their meeting in Riyadh shows that unity remains elusive. Saudi Arabia, a strong supporter of rebels fighting...

Russia has asked the United Nations Security Council to hold closed-door discussions on Turkish military action in Syria and Iraq, diplomats said on Monday, in the latest sign of increasing tensions between Moscow and Ankara. Russia's U.N. mission had no immediate comment. But council...

Yemen peace talks will start in Switzerland on Dec. 15 to reach a permanent cease-fire and an end to the nine-month conflict in the country, the United Nations envoy in Yemen said Monday. The UN will convene a series of face-to-face consultations to seek to establish a permanent cease-fire,...

Kurdish forces backed by U.S. air strikes declared a major victory last month over Islamic State after cutting access to a key supply route in northern Iraq. Yet days later the militants were back in business, underscoring their resilience in the face of defeat. The...