Today the PM will come to the Commons and take questions from all sides as to the governments approach to action against Isil. As always he will take questions from all sides.
At the same time William Hague has written a robust piece in the telegraph as to why he supports action:http://www.telegraph.co.uk/news/worldnews/middleeast/syria/12014935/We-were-wrong-about-Iraq.-But-were-not-wrong-on-Syria.html
