Teun van Dongen is an independent national and international security expert and regularly writes about such topics as terrorism, insurgency and conflict. He worked at The Hague Centre for Strategic Studies for six years and has been seconded to the National Coordinator for Counterterrorism and Security. He holds a PhD degree from Leiden University, which he earned by writing a dissertation on counterterrorism effectiveness. For more information, see www.teunvandongen.com.