to dateline london. how much, if anything, should britain pay to leave the european union? how bad is the military situation facing the group calling itself islamic state? and is wikileaks a good or a bad thing? my guests today are greg katz of associated press. abdel bari atwan who is a writer and commentator on arab affairs. maria margaronis of the nation. and david aaronovitch of the times. very good to see you. when britain leaves the eu, we should be faced with a stiff bill for the divorce. or the alternative metaphor is that it is like leaving a golf club we stop paying when we stop playing. which is it? and how much is the chancellor of the exchequer trying to save money to pay for what he knows will be an expensive few years ahead? what should we pay? what is the tariff for leaving? does anybody have any idea? no. since we think she will do the triggering on tuesday, and therefore the big discussions, it seems likely. there are things that have to be done before tha