these two arrests in germany, suspects potentially planning a mall attack, another christmas market attack. now what do authorities do to really get their head around and apprehend the broader web? >> well, the glass half full here is the fact they have an extraordinary amount of information on this network and in fact, i have been looking through quite a lot of it. 345 pages of investigative files i have been looking through. based on months and months and months of investigations into this so-called network named after its leading light, an iraqi preacher, who had a large effort under way to proselytize, to brainwash youngsters in germany and persuade them to either go and join isis in syria and iraq, or to launch attacks in germany. this was centered in dortmund,