Josh Lederman

The United States says its new round of sanctions against North Korea is just the opening salvo in its response to an unprecedented cyberattack on Sony. Yet there may be little else the U.S. can do to further isolate a country that already has few friends in the world.

The United States is reviewing whether to put North Korea back onto its list of state sponsors of terrorism, President Barack Obama said as the U.S. decides how to respond to the cyberattack on Sony Pictures Entertainment that law enforcement has blamed on the communist nation.

The White House says a review of a new Islamic State video confirms the death of U.S. aid worker Peter Kassig.

Facing a stubborn enemy, President Barack Obama professed confidence Wednesday that the U.S. will keep making progress against Islamic State militants in Iraq and Syria, as the reality set in of a lengthy military conflict with limited prospects for success.

President Barack Obama and military leaders are meeting to assess the the results of two months of airstrikes against Islamic State forces.