Defeat of ISIS Could Send ‘Terrorist Diaspora’ to West, F.B.I. Chief Says

Eventual victory against the Islamic State could well lead to an uptick of terrorist attacks in the West, not a reduction in them, James B. Comey, the director of the F.B.I., said on Wednesday.

“At some point there is going to be a terrorist diaspora out of Syria like we’ve never seen before,” Mr. Comey said at a cybersecurity conference at Fordham University. “Not all of the Islamic State killers are going to die on the battlefield.”
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James B. Comey, the director of the F.B.I., warned of a potential uptick in terrorist attacks with the eventual defeat of the Islamic State. Credit Bebeto Matthews/Associated Press

Mr. Comey predicted that the military coalition would eventually succeed in crushing the Islamic State, but that “through the fingers of that crush are going to come hundreds of really dangerous people and they are going to flow primarily to Western Europe.” But some, he said, could well end up in the United States.

He drew a parallel between this scenario and the formation of Al Qaeda more than a quarter-century ago, which drew from fighters who had been radicalized fighting in Afghanistan in the 1980s and early 1990s.

“This is 10 times that or more,” Mr. Comey said. “This is an order of magnitude greater than anything we’ve seen before.”

Mr. Comey said the American public got a glimpse of what this threat would look like in the terrorist attacks in the past year in Brussels and Paris. “We in the American counterterrorism business are constantly focused on that — that’s not here yet, but that challenge is going to come,” he said.