Islamic State cannot be defeated without addressing “both sides of what is essentially at this point a nonexistent border” between Iraq and Syria, the chairman of the Joint Chiefs of Staff said Thursday. The United States and its allies in the Middle East and beyond need to...

(Reuters) - Syrian government forces have sent reinforcements to an air base being attacked by Islamic State militants in northeast Syria where no fewer than 30 of the radical group's fighters were killed on Thursday, a group monitoring the violence said. The airbase at Tabqa,...

(Reuters) - A British Muslim leader called for action on Thursday to tackle a jihadi sub-culture after an Islamic State video showed a suspected Briton beheading U.S. journalist James Foley, held hostage in Syria . In Washington, U.S. Defense Secretary Chuck Hagel said the...

(Reuters) - President Barack Obama told a recent interviewer he did not want the U.S. military to become Iraq's air force. But he may have little choice. Iraq had only a fledgling air force when the United States withdrew in 2011. Washington has agreed to bolster Iraqi air...