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

Europe has a long and tragic history of mostly domestic terrorism.

The majority of the world's Muslims do not believe that terrorism is a legitimate strategy or that Islam is incompatible with democracy.

In intelligence work, there are limits to the amount of information one can share. Confidentiality is essential.

There are no automatic links between poverty and terrorism. Among millions of poor people in the world, only a few turn to terrorism.

We remain vulnerable.There is no such thing as 100 percent security against terrorism.

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.