Yes he'll have mentioned the United States on occasions I hope cos he teaches the United States, yeah, well as you know I mean there are a number of separate powers, there's the presidential erm there's the presidential power, in foreign policy making I'm talking about, there's president, there's the congress  there's the Pentagon, there's the secretary of state for foreign affairs as well, and one of the characteristics of American policy is the way in which sometimes they can be ha be pursuing separate erm aims  and using different methods.