Terrorism Threat in Europe 

Europe now faces threat from those militants, who travelled to Syria and Iraq, and other war-torn regions to fight for the Islamic State (IS) militant group and other extremists. Those young fighters often return back to home countries to conduct terrorist attacks on behalf of the radical organizations they are involved with.

According to the BBC, over 1,300 French nationals are believed to be currently fighting in Syria and Iraq, as well as around 600 British and 600 German citizens.

Over the past week France has suffered three terrorist attacks involving Islamic radicals, resulting in the deaths of 17 people in the Paris area.