Bloomberg: China said a failure by developed nations to honor their commitments to cut greenhouse-gas emissions is hindering progress in talks in Tianjin aimed at reaching an agreement to tackle climate change. Negotiations between delegates from about 175 governments in Tianjin, northern China, are being held up as the host country declined to discuss the legal framework for a second set of emissions reductions under the Kyoto Protocol after the first expires in 2012. China is boycotting …