>> the young man in this video speaks nearly perfect english. arwa damon i want to bring you in here, it strikes me he is a young man. we're used to seeing al qaeda videos in the old days. this is, you know, a guy in his 20s, more of the rank and file of the isis movement. do you think that's significant? >> i do think it is, we're also seeing very clearly just how much further isis has evolved since the days when al qaeda was the most feared terrorist organization. not just in terms of the type of propaganda they're putting out, but in sheer numbers of people, especially westerners that they've managed to attract by syrian battlefield, any sort of appeal and flow of foreign fighters that al qaeda and iraq for example was ever able to atrack. additionally when it comes to these videos, they circulate so widely and so quickly on the internet, not just pushing