Two years ago, I voted to oppose military action against the Assad regime in Syria. If David Cameron returns to the Commons next week, I will be voting to stand with our allies in extending air strikes against Isil, wherever they hide. It has not been an easy decision because, whatever the accuracy of our weaponry, the innocent are likely to be among the victims of future bombing. Right now, however, countless thousands across Syria and the wider region living under Isil barbarity are subject to systematic enslavement, rape, torture, murder and genocide. Isil cannot be reasoned with and it shows no shred of humanity or mercy to those under its barbarous control.