Turkish President Recep Tayyip Erdogan and U.N. Secretary General Antonio Guterres, not pictured, lead a signing ceremony at Dolmabahce Palace in Istanbul, Turkey, Friday, July 22, 2022. U.N. Secretary General Antonio Guterres and Turkish President Recep Tayyip Erdogan were due on Friday to oversee the signing of a key agreement that would allow Ukraine to resume its shipment of grain from the Black Sea to world markets and for Russia to export grain and fertilizers, ending a standoff that has threatened world food security. (AP Photo/Khalil Hamra)