At least 250 individuals are believed to have left Belgium to wage jihad in Iraq and Syria . Governments in northern Europe now face threats on multiple fronts , from loosely-organized cells with ready access to weapons , and in many cases the expertise to use them . Analyst Pieter Van Ostaeyen says would-be fighters help each other with travel advice through social media . TL;DR
At least 250 individuals are believed to have left Belgium to wage jihad in Iraq and Syria . Analyst Pieter Van Ostaeyen says would-be fighters help each other with travel advice through social media . TL;DR