(Clockwise from L) French President Francois Hollande, British Prime Minister David Cameron, Italy's Prime Minister Matteo Renzi, European Commission President Jean-Claude Juncker, European Clouncil President Donald Tusk, Japanese Prime Minister Shinzo Abe, Canada's Prime Minister Stephen Harper, US President Barack Obama and Germany's Chancellor Angela Merkel, attend working meeting at the G7 summit at Elmau Castle hotel in Kruen near Garmisch-Partenkirchen, southern Germany, June 8, 2015. Leaders of the Group of Seven (G7) industrial nations vowed at a summit in the Bavarian Alps on Sunday to keep sanctions against Russia in place until President Vladimir Putin and Moscow-backed separatists fully implement the terms of a peace deal for Ukraine. REUTERS/Michael Kappeler/Pool