Gunmen from the Islamist militant group al Shabaab stormed a university in Kenya and killed at least 147 people on Thursday, in the worst attack on Kenyan soil since the U.S. embassy was bombed in 1998.
More than 25,000 foreign fighters from some 100 countries are linked to al Qaeda and Islamic State, with Syria and Iraq comprising a "veritable international finishing school for extremists," United Nations experts reported to the U.N. Security Council.
Saudi troops clashed with Yemeni Houthi fighters on Tuesday in the heaviest exchange of cross-border fire since the start of a Saudi-led air offensive last week, while Yemen's foreign minister called for a rapid Arab intervention on the ground.
Warplanes from Saudi Arabia and Arab allies struck Shi'ite Muslim rebels fighting to oust Yemen's president on Thursday, a gamble by the world's top oil exporter to check Iranian influence in its backyard without direct military backing from Washington.
