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.

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.

Terrorists always have the advantage of surprise.

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

If you combat an international phenomenon, it is indispensable to share information internationally.

Terrorists have failed in what is arguably al Qaida's most important objective - to trigger revolutions.

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