Russia's President Vladimir Putin (2nd R) places a shawl around German Chancellor Angela Merkel next to Britain's Prime Minister David Cameron (R), South African President Jacob Zuma (L) and Kazakhstan's President Nursultan Nazarbayev (top L), before watching a fragment of the ballet "Ruslan and Lyudmila" during the G20 Summit in Peterhof near St. Petersburg September 6, 2013. REUTERS/Alexander Demianchuk (RUSSIA - Tags: POLITICS)