German Chancellor Angela Merkel (R) welcomes South Korea's President Moon Jae-in as he arrives to attend 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 / Tobias SCHWARZ