Greece woes weigh on G20 summit in Turkey - in pictures

Organisation for Economic Co-operation and Development secretary general Angel Gurria casts his shadow on the podium during a cnoference with the members of the media. Murad Sezer / Reuters

Federal Reserve chairwoman Janet Yellen, left, Banks of England governor Mark Carney, centre, and International Monetary Fund managing director Christine Lagarde huddle prior to a session at the G20 summit. AP Photo

International Monetary Fund managing director Christine Lagarde, chats with Turkey’s deputy prime minister Ali Babacan and Turkish Central Bank Governor Erdem Basci, centre, at the G20 finance ministers and central bank governors summit. Murad Sezer / Reuters

US Treasury secretary Jack Lew talks with International Monetary Fund managing director Christine Lagarde. Osman Orsal / Reuters

Finance ministers and central bankers from the Group of 20 gather during the opening session of the Istanbul summit. AP Photo

Turkey’s deputy prime minister Ali Babacan, US Federal Reserve chairwoman Janet Yellen and German federal minister of finance Wolfgang Schauble as they prepare for a photo shoot during the G20 meeting. Sedat Suna / EPA

Turkish riot police stand guard near the Istanbul Congress Center where the G20 meeting is behing held. Murad Sezer / Reuters

Protesers shout slogans in favour of Greece’s ruling Syriza party during a mass action against the G20 meeting in Istanbul. Murad Sezer / Reuters

Protesers shout slogans in favour of Greece’s ruling Syriza party during a mass action against the G20 meeting in Istanbul. Ozan Kose / AFP

Top officials from the world’s 20 largest economies gathered in Istanbul this week to discuss measures to spur a global economy plagued by Greek uncertainty, falling oil prices and a strong US dollar.