U.S. President Barack Obama said he knows Americans are asking "What can I do?" in the wake of the attacks in Paris and San Bernardino.
In his weekly address Saturday, Obama said, "One of the most important things we can do is to stay true to who we are as Americans."
He said terrorists "are trying to divide us along lines of religion and background. That's how they stoke fear. That's how they recruit."
He urged Americans to "reject bigotry – in all of its forms," saying "prejudice and discrimination" help the Islamic State group and "undermines our national security."
WATCH: President Barack Obama's weekly address
Obama said he will go the Pentagon Monday and to the National Counterterrorism Center later in the week to review what is being done and to determine what more can be done in the fight against Islamist militants.
The U.S. leader also revealed the Department of Homeland Security will update its alert system to ensure Americans get more information, including steps individuals and communities can take to be vigilant and to stay safe.