My hon. Friend is absolutely right on his second point. Prime Ministers do need to be able to deploy force or take action without parliamentary sanction if it is urgent and then to report to Parliament straight afterwards. Where there is a premeditated decision to take action, that convention has grown up, and I am happy to repeat it from the Dispatch Box.
As for the national security adviser, I think it is right to have an expert. It does not have to be someone who is currently a civil servant—an expert could be brought in from outside—but it does need to be an expert who is garnering together the military, civilians, the intelligence and all the different parts of Whitehall. It needs to be someone who is full time, rather than a politician who is also running a Department.