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Experts say the attack at the airport in Istanbul could have happened at almost any airport anywhere in the world.
President Obama said Monday that the shooting at a gay nightclub in Orlando that killed 49 people and wounded 53 more is an example of "homegrown extremism."
U.S. officials believe a senior Islamic State of Iraq and Syria (ISIS) commander has been killed.
Addressing the nation four days after a shooting in San Bernardino, California had unnerved Americans, President Obama pledged Thursday that the homeland would be protected, and urged Congress to take action on several fronts.
President Barack Obama lashed out Wednesday at Republicans who insist on barring Syrian refugees from entering the U.S., deeming their words offensive and insisting "it needs to stop."