Alarm over European fighters in SyriaTo view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 videoJens Thurau04/25/2013April 25, 2013Security agencies report a growing number of European Islamists joining the Syrian rebel effort. Germany is among the countries worried that the volunteers could remain dangerous when they return.https://p.dw.com/p/18NOBAdvertisement