Agence France-Presse: Japan must set an ambitious mid-term target for cutting greenhouse gas emissions to help global talks on drafting a new climate treaty, the Danish minister for climate and energy said Monday. Copenhagen will host a December meeting to hammer out a new climate treaty to replace the Kyoto Protocol when it expires in 2012. The European Union has said it would slash emissions by 20 percent by 2020 and raise the target to 30 percent if others set similarly ambitious …