isis online is encouraging attackers perhaps to go to other countries. now, also our viewers as you know and as many of our viewers knowch this is a passport free zone. can you go freely from one country to the next country. this is something considered by investigators. >> very much so. look. we know of several countries, especially belgium that have troubling person there and various attacks in europe. there will be a lot of french authorities. we seen in the case of the spanish authorities that warn the french about the perpetrator will have to be rethought totally after what happened last night in paris.