Former CIA Director Woolsey tells Congress of a doomsday scenario in which a nuclear-blast-triggered electromagnetic pulse takes down the US power grid, leading to starvation and death. Some experts decry 'hysteria' over EMPs.
Pentagon analysts are grappling with what this growing unrest in the Middle East means for US national security. Here are the top three ways the advance of the insurgent group the Islamic State in Iraq and violence in Gaza could endanger US national security.
The cease-fire agreement, reached late Monday night and mediated by the Tripoli City Council, would mark a rare pause in two weeks of fighting in the capital that's killed nearly 100 people and wounded 400, health officials say.
US officials accuse Russia of testing a new ground-launched cruise missile in violation of the Intermediate-Range Nuclear Forces Treaty that President Ronald Reagan signed with Soviet leader Mikhail Gorbachev.