The United Nations World Food Programme said Tuesday that an aid worker has died in a Yemeni prison three weeks after his detention by Houthi rebels. The announceme ...

Short-range aerial drones were the most common killer of civilians in Ukraine in January, the U.N.'s monitoring mission said ...

The president's warning came after Hamas said it will indefinitely delay the release of hostages held inside Gaza. The U.N.'s Secretary General has called for the releases to carry on.