When we use the word domestic [terrorism], we discount its actual impact as political terrorism, which is, of course, political violence meant to impact an audience outside of the immediate victims.

Now you have Donald Trump ready to execute policy on the basis that the Muslims are the problem, not ISIS. Oh Jesus, it's a circular firing squad.

Law enforcement does counter political extremism here in the United States in the exact same way that they do political extremists who are infiltrated into the United States, who may come from a religious motivation, as we saw overseas in Europe. But the same methodologies have to be used.

The ghost caliphate will be a virtual organization; it'll be decentralised, with no leadership, and it will just encourage people to keep acting now that the caliphate's gone, that individuals should go do self-starting jihad. Get a gun, get an improvised weapon, take your car, and carry out the jihad.

There is no difference between an ISIS gunman and an American gunman that goes into a mosque, or the gunman Baruch Goldstein who went into the mosque in Bethlehem and killed 29 guys about fifteen years ago. Goldstein took his service weapon and tried to kill everybody in the mosque. He shot over a hundred people. There's no monopoly on terrorism. Terrorism experts know this and we live according to that.

Trump wants to be an autocrat, he does want to be a Vladimir Putin-style ruler. His chief strategic advisor, Steve Bannon, is a follower of Alexander Dugin. Dugin believes liberal democracy should be destroyed and it should be destroyed from the right, and an alliance of autocracy should form between the United States, Europe and Russia, in order to confront Islam.

We have this unfortunate habit in the United States of dividing terrorism into different categories. External, foreign terrorism, which manifests itself overseas or in the United States, or domestic terrorism.