the travel flows more than 1,000 french nationals going off to fight in syria and iraq, hundreds coming back. thousands of french citizens being radicalized inspired by isis. and this drum beat of calls from syria and iraq, from french isis fighters in videos which are released every week, every month it appears, calling for attacks exactly like this. gun and bomb attacks in paris. so is this what we're seeing play out on the streets of paris tonight? french authorities have not yet officially weighed in calling this a terrorist attack, but i know that french security analysts and others being briefed by their sources believe that is exactly what we're seeing at this point, wolf. >> i want you to standby as well, paul. we just got some video in a vine video. this is six seconds. this is at the football stadium. i'll play the video. you can hear the explosion. listen to this.