Will guarantee Tehran will lack capacity to develop nuclear weapons.

First leader not to come from the Mehsud tribe.

Region seen as back in favor with transnational drug cartels.

Police described the stabbing deaths of a New York City mother and her 4 kids as 'a scene you'll never forget.'

U.S. Secretary of State John Kerry said complaints about the operation from Libya and others are unfounded.

Crashed in northern Colombia on a U.S. counter-drug mission.

U.S., Russia had been at odds on how to enforce resolution requiring Assad regime to dismantle chemical weapons.

Ramzi Binalshibh was ejected from the courtroom after arguing with the judge at the start of a pretrial hearing.

The president and others assembled on the White House lawn and bowed their heads to observe a moment of silence.

Obama administration confident it will secure congressional support for intervention after Assad regime used chemical weapons against rebels.