Turkish Prime Minister Tayyip Erdogan (C) walks upon his arrival a day before the G20 Summit in St. Petersburg, September 4, 2013. The Group of 20 cut its teeth in the global financial crisis of 2009,... more 
Turkish Prime Minister Tayyip Erdogan (C) walks upon his arrival a day before the G20 Summit in St. Petersburg, September 4, 2013. The Group of 20 cut its teeth in the global financial crisis of 2009, achieving unprecedented cooperation between developed and emerging nations to stave off economic collapse which has not been matched since. REUTERS/Alexei Maishev/RIA Novosti/Pool (RUSSIA - Tags: POLITICS BUSINESS) ATTENTION EDITORS - THIS IMAGE HAS BEEN SUPPLIED BY A THIRD PARTY. IT IS DISTRIBUTED, EXACTLY AS RECEIVED BY REUTERS, AS A SERVICE TO CLIENTS less 
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Reuters | Photo By RIA NOVOSTI / REUTERS
Wed, Sep 4, 2013 10:25 AM EDT