(131122) -- WARSAW, Nov. 22, 2013 (Xinhua) -- Protesters wearing masks of U.S. President Barack Obama (R) and German Chancellor Angela Merkel 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)
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