(FILES) This file photo taken on August 26, 2016 shows US President Barack Obama arrives at The White House in Washington DC. US President Barack Obama will meet his Turkish counterpart Recep Tayyip Erdogan on Sunday in China on the sidelines of the Group of 20 summit, with Syria high on the agenda, top aide Ben Rhodes announced August 29. / AFP PHOTO / ZACH GIBSONZACH GIBSON/AFP/Getty Images