Guardian: The climate secretary, Ed Miliband, today accuses China, Sudan, Bolivia and other leftwing Latin American countries of trying to hijack the UN climate summit and "hold the world to ransom" to prevent a deal being reached. In an article in the Guardian, Miliband says the UK will make clear to those countries holding out against a binding legal treaty that "we will not allow them to block global progress". "We cannot again allow negotiations on real points of substance to be …