Russia's President Vladimir Putin (L), Turkey's President Recep Tayyip Erdogan (2R), President of the European Council Donald Tusk (2L) and President of the European Commission Jean-Claude Juncker line up for the family photo on the first day of the G20 summit in Hamburg, northern Germany, on July 7, 2017. Leaders of the world's top economies gather from July 7 to 8, 2017 in Germany for likely the stormiest G20 summit in years, with disagreements ranging from wars to climate change and global trade. / AFP PHOTO / SAUL LOEB