Obama to speak to nation after California attack

Wife in couple accused of killing 14 voiced support for Isis on Facebook before attack
SAN BERNARDINO, CA - DECEMBER 03: FBI agents and local law enforcement examine the crime scene where suspects of the Inland Regional Center were killed on December 3, 2015 in San Bernardino, California. Police continue to investigate a mass shooting at the Inland Regional Center in San Bernardino that left at least 14 people dead and another 17 injured. (Photo by Sean M. Haffey/Getty Images)
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US President Barack Obama will speak to the nation on Sunday following the fatal shooting of 14 people in California four days ago, in an effort to counter criticism that his government is not doing enough to protect Americans.