Telegraph: As 100 presidents and prime ministers prepared for the meeting at the United Nations headquarters in New York, John Ashton, the Foreign Secretary’s Special Representative for Climate Change, lamented the “ambition gap” between Europe and the US. The US Senate is considered unlikely to approve a new energy-saving bill before the intended signing of a new climate deal in Copenhagen in December, which would replace the Kyoto Protocol. “There is no technological obstacle, there is …