US President Barack Obama will make a special primetime address to the nation on counterterrorism efforts.
Just days after 14 people were shot dead in California, the White House said the president will address the nation from the Oval Office at 8pm on Sunday (2pm NZT tomorrow).
The speech will include "the steps our government is taking to fulfilll his highest priority: keeping the American people safe".
Obama vowed earlier on Saturday (local time) that America "will not be terrorised," as the Islamic State group praised the couple behind Wednesday's mass shooting as "soldiers" of its self-proclaimed caliphate.
The FBI are investigating the attack in San Bernardino as a possible act of terrorism.
"The president will provide an update on the ongoing investigation into the tragic attack in San Bernardino," the White House statement said.
"The president will also discuss the broader threat of terrorism, including the nature of the threat, how it has evolved, and how we will defeat it.
"He will reiterate his firm conviction that ISIL will be destroyed and that the United States must draw upon our values - our unwavering commitment to justice, equality and freedom - to prevail over terrorist groups that use violence to advance a destructive ideology."