China Daily: In the days leading up to his flight this week to Copenhagen, Premier Wen Jiabao has been on a marathon telephone diplomacy with major global leaders, a key indicator that the nation is “vigorously” pushing for a climate change treaty at the United Nations conference. With the Chinese delegation negotiating at the Danish capital, the premier’s last-ditch efforts make up China’s two-front push to coordinate stances between international players and gain consensus on global …