carpet bombing. for more go to cnn.com/fareed and read my washington post column this week. let s get started. on thursday there was an extraordinary gathering krogs town at the unites nations, jack lew was the chair of a u.n. security council meeting of his counterparts around the world. it was first time ever the finance ministers met. they were there to come up with a plan to fight isis economically, to cut off its funding. joining me now, for an exclusive interview, secretary lew and his counterpart, the british chancellor, george osbourne. explain why this is so important. it sounds grand and everyone is against isis. but what will it specifically do that will be effective now?