Australian Broadcasting Corporation: Foreign Affairs Minister Stephen Smith has rejected criticism that the Government is not leading global efforts against climate change, as it had promised to do. Climate Change Minister Penny Wong will be in Poznan, Poland, this week for global talks, but will not be revealing the Government’s 2020 target for cuts in greenhouse gas emissions until next week. The Greens say the Government is failing to live up to its promise to be a leader at the talks. But Mr Smith has …