Secretary of State John Kerry claims the president has the constitutional power to ignore Congress's vote on Syria. Constitutional scholars disagree.

With the recent, deadly Syrian gas attack – crossing the now notorious “red line” of which President Obama warned – the war drums are beating once again.

Aware that a changing climate is bad for U.S. security interests, the Department of Defense is seeking to green the military. But some in Congress aren't on board.

Automatic spending cuts mean less medical care for veterans, yet Congress continues to appropriate funds for outdated and needlessly expensive weapons.

Perhaps we should pause for a second to consider whether intervening in Syria's bloody civil war is a good idea.

The energy industry wants to use unmanned aerial vehicles to monitor pipelines.

Military historian Andrew Bacevich has several questions he'd like the president to answer before taking military action in Syria.

President Obama escalated the U.S. drone campaign in Yemen earlier this month -- and it's not winning many hearts and minds on the ground there.

Perspectives from Robert Reich, Chris Hedges, Lee Fang and others on the story everyone's tapping into.

Mark Fiore's "security bear" says domestic spying is nothing to worry about "unless you're a terrorist, a leaker or, um, a fan of the Bill of Rights."