KABUL, Afghanistan— U.S. troops on Monday reinforced a remote military outpost after well-armed attackers got inside and killed nine American soldiers in the deadliest assault on U.S. forces in ...

In this photo taken on Saturday, April 18, 2015, Bastien Mathurin, crew commander, of Crew 153, stands next to a planted Belgian flag outside the Mars Desert Research Station, in Hanksville, Utah.

At least 15 confirmed Islamic State West Africa Province (Iswap) attacks have targeted military outposts across the Lake Chad region this year. Common to this campaign, which the group calls Camp ...