he says this deal is about iran's nuclear program, nothing more. brett? >> rich edson live in vie evenee vienna thank you. republicans say the president values his legacy above all else. here's more from the white house tonight. >> today's announcement marks one more chapter in this pursuit of a safer and more helpful, more hopeful world. >> reporter: a more hopeful world. for president obama, that was the pretext for the iran nuclear agreement. a world the white house says that looks forward rather than back through the lenls of historic rivalries. >> america must lead not just with our might but our principles. i shows we are stronger not when we are alone but when we bring the world together. >> reporter: forged with the help of other world powers it's