Germany's Chancellor Angela Merkel and President Barack Obama discuss before a meeting on the second day of the G20 Summit in Cannes, November 4, 2011. REUTERS/Kevin Lamarque
German Chancellor Angela Merkel speaks with the President of the European Central Bank, Mario Draghi, before the start of a meeting on the second day of the G20 Summit in Cannes, November 4, 2011. REUTERS/Chris Ratcliffe/pool
President Obama listens as he discuss with World Trade Organisation head Pascal Lamy before the start of a meeting on the second day of the G20 Summit in Cannes, November 4, 2011. REUTERS/Kevin Lamarque
 
South Korea's President Lee Myung-bak speaks with his Chinese counterpart Hu Jintao before the start of a meeting on the second day of the G20 Summit in Cannes, November 4, 2011. REUTERS/Chris Ratcliffe/pool
Canada's Prime Minister Stephen Harper, International Monetary Fund President Christine Lagarde and Britain's Prime Minister David Cameron take part in the traditional family photo during the G20 Summit of major world economies in Cannes, November 3, 2011. REUTERS/Kevin Lamarque
President Obama inspects a commemorative poppy on the jacket of Canada's Prime Minister Stephen Harper as G20 leaders gather for the traditional family photo at the G20 Summit in Cannes, November 3, 2011. REUTERS/Chris Ratcliffe/Pool