Failure in Afghanistan would have profound consequences for our national security. It would undermine the NATO alliance structure that has been the bedrock of Britain's defence for the last 60 years... I will not allow this to happen on my watch.

I have had national security background, 10 years on the Intelligence Committee, the last two years as chair.

All of Britain's aid is spent in Britain's national interests, and some of it contributes to Britain's national security as well.

For 50 years, the Republicans have been accusing the Democrats of being soft on national security.

The president cannot use the pursuit of national security as a carte blanche to undermine the very freedoms that define America. This administration - like that of President Nixon - has apparently secretly adopted a legal view of the Executive Branch's power that is unbounded. A commitment to the Constitution and our laws demand an independent investigation.

The academy has been dealing with the issue of scientific openness versus national security since 9/11,