International Monetary Fund (IMF) Managing Director Christine Lagarde listens to Greek Finance Minister Euclid Tsakalotos (R) during a euro zone finance ministers meeting in Brussels, Belgium, July 12, 2015. Euro zone leaders will fight to the finish to keep near-bankrupt Greece in the euro zone on Sunday after the European Union's chairman cancelled a planned summit of all 28 EU leaders that would have been needed in case of a "Grexit". REUTERS/Francois Lenoir