Exclusive

An influential, unpublished report looks to radically revise notions of how to achieve peace in this war-torn country.

Washington believed Iraqi Prime Minister Haider al-Abadi would get serious about recruiting Sunni tribes to fight the Islamic State. Now it's not so sure.

Washington has evidence that Tehran is trying to buy new equipment for a key nuclear facility. But the White House isn't willing to say anything publicly about it.

Why the United States isn't using its biggest financial weapon against banks in the Islamist militant group's territory.

Defeating the terrorist army in Iraq and Syria may not be enough to prevent the Islamic State from replacing al Qaeda as the world's most dangerous militant group. 

With the Export-Import Bank on the chopping block, American companies tried to get requests in under the wire.

In an exclusive interview, a top Iranian official says that Khomeini personally stopped him from building Iran's WMD program.

As the town of Kobani appears poised to fall to the Islamic State, exclusive, previously classified, State Department cables show how U.S. officials tried to both engage and undermine its Kurdish defenders.

How to make ricin, Semtex, and banana mousse.

Buried in a Dell computer captured in Syria are lessons for making bubonic plague bombs and missives on using weapons of mass destruction.

Here's why Keith Alexander thinks he's worth a million dollars a month.

An investigation into potentially illegal spending could leave the Pentagon's spy agency rudderless as it ramps up operations in Iraq.