Rob Wainwright

We have 5,000 Europeans who have been radicalized by [ISIS] and have traveled to Syria and Iraq and engaged in conflict experience, we suspect that about one-third of them have come back: That is our best guess.

That still leaves, however, maybe several hundred that are potent... by Rob Wainwright

That still leaves, however, maybe several hundred that are potential terrorists.

Britain would have access to fewer capabilities in a less effective way, which at the moment plays one big part in the way Britain secures its borders and deals with the threat from terrorism and crime.

If you put at risk any part of the framework for international police cooperation and intelligence sharing, that Britain currently relies on then there clearly is potential for consequences, i think there are some pretty serious security consequences actually.

I'm not entirely confident, that's because we have a fragmented intelligence picture of precisely who is involved and where they are.

The terrorist threat... is operating on the boundaries between te... by Rob Wainwright

The terrorist threat... is operating on the boundaries between terrorism and serious crime.

In the end, what we are hoping to have is a strategic impact against the problem as a whole rather than just playing a simple numbers game.

It is certainly the most serious terrorist threat Europe has face... by Rob Wainwright

It is certainly the most serious terrorist threat Europe has faced since 9/11.

The problem we are dealing these days is not just about Syria and Iraq it is about other terrorist networks around the world, in Africa, in the Arab peninsula for example, that have franchise movements of the al Qaeda brand.