Telegraph: Poland has claimed that it has assembled enough votes to block a landmark EU climate change agreement after spearheading a revolt by Eastern European states that fear the package would increase their dependence on Russian natural gas supplies. A six nation bloc on the EU’s eastern fringes signed a pact to fight a proposal designed to cut carbon dioxide (CO2) emissions by a fifth by 2020. The target represents the EU’s landmark initiative to address the pressures of climate …