syria. this is exactly what people fear. this revolving door between french citizens and syria. people going there and coming back. >> yes, this is no surprise. we experienced the first wave of jihadists or terror plots conceived by sympathizers from inside europe. now we see the returnees, same way, he returned from syria. we see now the returnings. this is what we must fear over the last two years, is the return of people who have been trained to use weapons, explosives. very much trained to carry out terrorist attacks of large scales here in europe. >> a scale that in the united states that we don't have to deal with. 1,000 people are believed to have gone from france. >> we're speaking of 2,000 individuals involved in the jihadi networks, whether in france or abroad. and 600 of our citizens