Again, I cannot speak about a particular case or an individual, but I do not agree with the right hon. Gentleman that it is better in every case to talk to someone who has left to join a terrorist group to try to find out why; I do not think that that is the case. The driving factor on every occasion should be what is best for the security and the national interest of this country. He is right to point to the issue of why so many people—as I said, it is approximately 900 over a number of years, and many of them are British—have been drawn to leave these shores to go and join such a vile terrorist organisation. We at the Home Office and our partners in the police, the security services and others take that work very seriously. When we start to understand more why that happened, we must use those lessons to safeguard more people, especially young people.