Cameron always said he would only hold the vote if he knew he stood a good chance of winning. Today will be interesting with 10.5 hours of debate in the Commons. The main issue is that the Labour leader,Corbyn has been forced to give a free vote to his MPs, and many in his shadow cabinet including the shadow foreign secretary will vote against him. I don't see it as the UK is declaring war, it's helping out and doing their bit because the whole world is at war with IS. With the UN Security Council backing, it is not like Iraq where the UN opposed action. The question is if the air strikes are going to happen, how long will it go on for?