GETTY FBI chief James Comey warns of a

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There will be a terrorist diaspora sometime in the next two to five years like we’ve never seen before James Comey

During a US Congress hearing on the terror threat 15 years after September 11, James Comey said that even though America is close to destroying ISIS’ so-called caliphate, militants driven out of the Middle East will settle in other countries in order to commit horrific atrocities. Mr Comey said: “There will be a terrorist diaspora sometime in the next two to five years like we’ve never seen before.”

GETTY Comey said that even though ISIS is being undermined in Syria and Iraq, the threat still continues

He added: “Not all of the Islamic State killers are going to die on the battlefield.” His chilling predictions were echoed by Homeland Security Secretary Jeh Johnson and Nicholas Rasmussen, director of the National Counter Terrorism Centre, who also testified at the hearing. Mr Johnson warned that terrorist threats have evolved and that previous attacks had to be directed by terrorists, whereas now they are often simply inspired by terrorist ideology and are carried out by individuals acting alone.

GETTY Homeland Security Secretary Jeh Johnson says terrorist threats have evolved

He said that that we now live in a world that “includes the threat of terrorist-inspired attacks” as individuals who live in the West become “self-radicalised” and strive to carry out attacks on home soil. Johnson said that terror threats from self-radicalised individuals pose complex challenges to security as they can occur with little or no notice and are difficult to detect. It was revealed that the FBI is currently monitoring nearly 1,000 Americans who are believed to have been radicalised by terrorist propaganda.

GETTY The Orlando shootings were carried out by self-radicalised terrorist Omar Mateen

The fight against ISIS Fri, November 18, 2016 The battle against ISIS militants (also abbreviated as Daesh, ISIL, IS and Islamic State) continues in the Middle East. Play slideshow Getty 1 of 183 Forces battle against ISIS