President Obama Talks Terror, Congress at Year-End News Conference
The president fielded questions from reporters before leaving for vacation with his family.
Officials say the hostages died from their wounds shortly after U.S. forces reached them.
Luke Somers was killed during a failed rescue attempt in Yemen, say U.S. officials.
Top US officials, including President Obama, say Somers was "murdered" by al Qaeda captors.
Meet ash Carter he's a scientist a former university professor and he could just be the nation's half the country. Cash some you know brings a unique blend of strategic. Perspective and technical know how President Obama this morning officially naming Carter as his pick to replace Chuck Hagel at
Speculation about Chuck Hagel's replacement emerges prior to the formal announcement.
Ashton Carter, set to replace Chuck Hagel, has not served in the military or in Congress.
Carter nominated as new Secretary of Defense; Parts of Detroit lose electricity; NFL running back Peterson in court.
I'm Michelle Franzen in New York ABC news can confirm President Obama. We'll announce the appointment of pentagon official Ashton Carter as the next US secretary of defense. Replacing chalk Cagle who stepped down last week I'm again Michelle Franzen in New York. For more on this developing
ABC News' Martha Raddatz, the Wall Street Journal's Bret Stephens and Foreign Policy's David Rothkopf analyze why Defense Secretary Chuck Hagel resigned and his potential replacements.