More than six years after a Muslim army major shot dead 13 people at Fort Hood, President Obama on Sunday night - for what may be the first time - publicly identified it as a terrorist attack. In his primetime Oval Office address on the threat of terrorism in the wake of last week's attack in San Bernardino, California, Obama said the threat had evolved in the years since 9/11. "As we've become better at preventing complex attacks like 9/11, terrorists turn to less complicated acts of violence like the mass shootings that are all too common in our society,"...