• President Barack Obama thinks as he is asked a question while about speaking about the economy at the City Club of Cleveland in Cleveland.
  • A North Korean Internet blackout in December was retaliation for the country's hacking of Sony Pictures, the chairman of the House Homeland Security Committee confirmed after months of speculation.
  • Ukrainian soldiers ride on a armored personnel vehicle outside the eastern Ukrainian city of Debaltseve
  • Fighters of the Islamic State of Iraq and the Levant (ISIL) stand guard at a checkpoint in the northern Iraq city of Mosul, in this June 11, 2014 file photo.
  • The logo of the US Department of Homeland Security
  • A Fort Bliss Military Police vehicle drives along the perimeter of the El Paso VA parking lot as officers searched for a gunman following a shooting inside the facility Tuesday, Jan. 6, 2014.