Reuters: Moscow doubts carbon trading can solve climate change because recent swings in stock and commodities prices show markets are unable to fix global problems, an official Russian document showed. The document, outlining Russian views on a new UN climate pact meant to be agreed in December 2009, also expressed scepticism about tough international targets for greenhouse gases and said any deal should not be “punitive” to violators. “Market approaches are one of (the) effective means …