members were in touch with german isis operatives in syria. and some of whom were in touch, we understand, from u.s. sources with members of the external attack network of isis in syria. what remains to be seen is whether isis was giving instructions before the attack and had any advance knowledge before the attack. if he sent this to them before going and launching, i guess it would have some advanced knowledge that something was on the way. >> let's also bring in to the conversation cnn national security analyst and department of homeland security juliette kayyem, paul brings up a very good point. just because this one terrorist is dead does not answer so many questions about the broader network, how big was it, what were they plotting. you know, obviously europe on high alert right now. given all of this, this was the most wanted man in europe.