Police forces collect information to be used in a public court to get people convicted. Security services gather information that does not necessarily lead to people being prosecuted and in many cases needs to remain confidential.

Muslim organisations tend to have a low level of organisation. The communities in Europe are quite diverse.

We still lack a global definition of terrorism.

We are familiar with terrorism. But indiscriminate, cross-border, religiously motivated terrorism is new.

I have never come across a technology that doesn't change. This is inevitable. You have to adapt your systems as technology develops.

The key to tackling Islamist fundamentalism and terrorism from the Islamist community is in the hands of moderate Muslims.

Terrorists always have the advantage of surprise.