Hungary’s nationalist prime minister warned Saturday that a Russian invasion of Ukraine could send hundreds of thousands of Ukrainian refugees fleeing across the border into his country. Right-wing populist leader Viktor Orban, speaking in an annual address that this year kicked off his political campaign for Hungary’s parliamentary election on …

Suspected al-Qaida militants have abducted five U.N. workers in southern Yemen, Yemeni officials said on Saturday. The officials said the workers were abducted in the southern province of Abyan late Friday and taken to an unknown location. They include four Yemenis and a foreigner, they said. In response to a …

The U.S. Navy denied operating in Russian territorial waters on Saturday after Russia’s military claimed it chased away a Virginia-class submarine in the Kuril Islands after the American vessel refused an order to surface. A Russian navy destroyer used “appropriate means” against the U.S. submarine after the order was refused, …