Marcin Korolec (C), president of COP19/CMP9, Polish Environment Minister and UN Framework Convention on Climate Change (UNFCCC) Executive Secretary Christiana Figueres (L) attend the opening ceremony of the United Nations Climate Change Conference 2013 in Warsaw, Poland, on Nov.11, 2013. The annual UN global climate talks started here Monday amid hopes that progress will be made toward the signing of a new climate deal by 2015, however no major breakthrough was expected. [Photo/Xinhua]