Armed Conflict (Parliamentary Approval)

Should not the rights and responsibilities of Parliament extend not just to the resolution to deploy into an area of armed conflict? Should it not have the right to monitor what subsequently happens? Perhaps it could appoint a bespoke Select Committee to monitor what happens in the conflict and post conflict. In situations such as Iraq, when Parliament knows that it is potentially on a countdown to deployment to armed conflict, such a bespoke Select Committee could be formed and could help to determine when parliamentary votes were required and when debates were appropriate.