Europe Braces for Post-Mosul Jihadi Onslaught | The Investigative Project on Terrorism

European leaders fear onslaught of jihadists fleeing from Mosul after Iraq’s government and its allies kick ISIS out of the city.
Last year’s Paris attacks and the Brussels attacks in March brought heightened awareness that ISIS established an underground network to move jihadis in and out of Europe at will. Thousands of European nationals traveled to Syria and Iraq to wage jihad for ISIS. An estimated 2,500 Europeans still belong to ISIS’s fighting force.