There are numbers of french, belgi belgiums, german, even people from the United States. We know of one american from florida who committed a Suicide Attack in syria. How big is the threat internationally from isis . Thats a very, very significant threat. Europe officials tell me up to 1,000 europeans have joined isis. Hundreds have come back to europe. The concern is these people could be trained by the group and set back to europe and even on to the United States to launch terrorist attacks. Theres also concern the people who are now in europe who once fought with isis before could launch attacks on their own. We saw in may a French National carry out an attack on a Jewish Museum in brussels where he shot four people. So concern you could see more of that in the weeks ahead. Nick paton walsh standing by in erbil. It does seem the United States have drawn the line in terms of their involvement, protecting kurdish areas, protecting the kurdish north, which has been a good ally to the U
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