If I may say so, I think the hon. Gentleman did himself no credit with that intervention.
Let me turn to the fourth test. This is important, because it is the hardest test of all, and we need to level with the House about it. We must believe that there is a reasonable prospect of success before we take the grave step of committing our forces. The aim is clear: it is to reinforce the democratic Government of Iraq and prevent the advance of ISIL, at the invitation of that Government, and it is to do so by using international military air power while the Iraqi army and Kurdish peshmerga conduct a ground campaign.
No one should be in any doubt that this is a difficult mission and that it will take time, but there is already evidence that the US action is having the effect of holding back ISIL. Prior to that action, ISIL was advancing, with catastrophic consequences for the Iraqi people. This is where there is a choice: to act or not to act. Both have implications, and both have consequences. In June, ISIL took Mosul. Failure to act would mean more Mosuls, and more killing of the sort that I described earlier.