At least a dozen of the cases are full-blown investigations of possible Muslim radicals in the military community. The stepped-up scrutiny comes in the wake of the 2009 mass shooting at Fort Hood, Texas, that left 13 dead.

School's out and that means families with young children are packing their bags and boarding flights. This summer, though, kids going through airport security are being treated just a little bit more like kids. The Transportation Security Administration has announced some new policies.

The latest round of high-level negotiations over Iran's nuclear ambitions ended Tuesday without an agreement. After the failure of talks that President Obama called Iran's "last chance," some wonder whether or not Israel or the United States may now opt for military force.

One privilege — or burden — of the Oval Office is that each inhabitant gets to decide how dirty to get his hands in wartime. Although the CIA program is classified, published accounts say President Obama has decided to take personal responsibility for making decisions about whom drones will target and kill.

The U.S. conducts warfare against terrorists and against some states on many different levels, and in many far-flung places. David Sanger, author of Confront and Conceal, and NPR commentator Ted Koppel talk about the reliance on secrecy in warfare and how open the administration should be.

Francis Gary Powers became an iconic Cold War figure when his U-2 spy plane was shot down over the Soviet Union in 1960. Yet when he returned home, a shadow hung over him. On Friday, the Pentagon honored him posthumously.