My hon. Friend makes a very important point, although I would say that parliamentary approval was not of secondary importance but of parallel and related importance. There should be a formally accepted and generally agreed way of approaching decisions on these matters, but, as on all matters, the quality of those decisions will depend on the quality of the judgment and the available information.
That brings us to questions about how the House should deal with intelligence, which other hon. Members—I have already spoken for half an hour—may wish to pursue in this debate. Relevant issues are the role of the Intelligence and Security Committee, whether it should report to the Prime Minister or the House, whether other Committees should have a role in seeing intelligence under carefully guarded procedures, and the Government's treatment of intelligence, which I shall raise as I reach my conclusion.