Homeland Security Secretary Jeh Johnson says that in the coming days his department will unveil a new way to let the public know about terrorist threats. It's an acknowledgement, he says, of the evolving threat environment.
In his address to the nation on Sunday, President Obama asked Congress to authorize the use of military force against the Islamic State. The ongoing U.S. military campaign against ISIS in Iraq and Syria is being conducted under the same legal authority Congress granted the president to combat terrorism after the September 11th attacks. It hasn't been updated since.