He said that when the threat level has been raised in the past, the move has typically linked to intelligence of a specific terror plot.
Unfortunately citizens on both sides of the Atlantic have been left mystified by what, if anything, they were supposed to do in response to non-specific terror threats.
A video caught the moment a peace rally in Ankara was hit by a suspected terror attack today.
That mass terror has a specific purpose: to build the conditions for a great war of global domination, which ISIS believes it will win.
The Government has urged British nationals to leave Libya's second city, Benghazi, in response to a "specific threat to Westerners" from terror groups operating in North Africa.
The video, which emerged just days after the multiple attacks on Paris by an Isis terror cell, was "nothing new" and there was "no current or specific threat", said de Blasio and the NYPD commissioner, Bill Bratton, who spoke alongside him.
I was consumed by an abstract terror.
"We no longer have concrete indications for a terror threat today or tomorrow at a specific location," Bavarian Interior Minister Joachim Herrmann said.
Almost 5 years later, in March 2016, Brussels got hit by a terror attack.
First, we propose a serious game that simulates a mass emergency caused by a terror attack in a train station.
