billion a year. cnn correspondents are following the developments. phil black is in edinburgh, scotland. nick roberts is in rome and frederick plieitgen is in senegal. we are in scotland with phil black. good morning to you, phil. i think i heard prince charles over the weekend say this is the last chance saloon, were his words, to save the planet. what are the expectations here, phil, pretty low for the cop. what can we expect from this summit if it seems to be at the end? reporter: ultimately, isa, the criteria for determining the unquestioned success are pretty straightforward. either the individual