His deal? Easy, Britain is awash in Muslims, including many terrorists. This gives Tony the chance to jump on two bandwagons at once, (1)The War, so nobody can criticize him. (2) He can co-opt the nationalist right in England, simply by cracking down on the Muslims. Who, BTW, really, really need it right now.
This may be a 10-year war that gives Britain 10 more years of this Clinton-clone-clown. Talk about unintended consequences!