crisis for europe accepting migrants coming in, fleeing from northern africa and syria. but you have a piece in "the daily mail" or reporting about how it's been easy for isis fighters to move. what have you been able to discover? >> well, a colleague of mine was actually on the border with syria and he was able to buy a syria passport and able to buy for a couple hundred dollars that would have allowed him if he were a migrant seeking to harm france or any other country in europe to pass into that country as a refugee posing as a refugee and mount one of those attacks. we have learned that two of the attackers perpetrators of the attacks here in paris able to come into the country with a stream of refugees posing as refugees, hidden amongst them and do the attacks. serial you threat. >> it's a huge wake-up call. chris, let's talk to you about