As Rep. Paul Gosar, a Republican who represents western Arizona, tweeted Tuesday after a southern border tour: “25 miles of barbed wire fence is the only thing keeping #ISIS out of America.

U.S. intelligence and security officials are increasing their focus on the country’s southern border, worried the constant flow of migrants has attracted the attention of the Islamic State ...

PESHAWAR, Pakistan -- Pakistan agreed yesterday to suspend military offensives and impose Islamic law in part of the restive northwest, making a gesture that it hopes will help calm the Taliban ...

BEIRUT — The Islamic State was routed Monday from one of its key strongholds on Syria's border with Turkey after its defenses crumbled and its fighters either defected or fled, raising new ...