aimen, you know it from a very personal experience. but are you surprised that the whole isis take two, if you like, is unfolding right now? ghters and brides?e foreign >> after every con flinflict we the same problem. after the soviet invasion of afghanistan ended, many of the veteran, you know, volunteers of the afghan jihad returned back home and they started a campaign of terrorism in many countries includie ining algeria and asia. in is not a new phenomenon but there weren't many europeans and now we have europeans. >> you set up this center and you have watched this quite a lot, peter neumann. that makes a big difference because we're in europe and we've seen this spate of terrorism in europe for the last several years. >> yes. so, it's been the most significant mobilization of jihadi foreign fighters that has ever happened. it's estimated between 5,000 and 6,000 western europeans have gone to syria and iraq. of course, going back to your question, they've want only been returning since recently, they've been returning for years.