http://www.RealClearPolicy.com/authors/rss/archive/29648.xmlAuthor http://www.spiegel.de/international/world/how-islamic-state-fighters-pose-a-threat-to-the-world-a-986632.html Wed, 20 Aug 2014 00:00:00 -0500 Markus Feldenkirchen, Christoph Reuter, Mathieu von Rohr, Jörg Schindler, Samiha Shafy and Christop