Deutsche Press-Agentur: Six days of international talks on climate change ended in disappointment on Saturday, with little sign of progress and host nation China accusing developed nations of backtracking on promises. "We have made some very modest progress, but unfortunately it is very limited," US negotiator Jonathan Pershing said after the talks of the UN Climate Change Conference in the Chinese city of Tianjin. "We did not get a balanced outcome yet," Pershing said. "The lack of progress …