Protesters wearing masks of (L-R) U.S. President Barack Obama, Japanese Prime Minister Shinzo Abe, German Chancellor Angela Merkel and French President Francois Hollande attend a demonstration outside of the National Stadium during the 2013 UN Climate Change Conference in Warsaw, Poland, Nov. 22, 2013, calling on world leaders to decide which route they want to take in climate talks. (Xinhua/Zhang Fan) |