Polish Prime Minister Donald Tusk delivers a speech as he attends the Convention on Climate Change COP19 conference at the National Stadium in Warsaw November 19, 2013. REUTERS/Kacper Pempel (POLAND -... more 
Polish Prime Minister Donald Tusk delivers a speech as he attends the Convention on Climate Change COP19 conference at the National Stadium in Warsaw November 19, 2013. REUTERS/Kacper Pempel (POLAND - Tags: ENERGY POLITICS) less 
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Reuters | Photo By KACPER PEMPEL / REUTERS
Tue, Nov 19, 2013 12:06 PM EST