FILE - President of Turkey, Recep Tayyip Erdogan (C) virtually attends G20 summit from Vahdettin Mansion in Istanbul, Turkey on November 22, 2020. (Mustafa Kamaci/Anadolu Agency via Getty Images)DUBAI, United Arab Emirates - Leaders of the world's most powerful nations wrapped up the Group of 20 summit on Sunday, vowing to spare no effort to protect lives and ensure affordable access to COVID-19 vaccines for all people.The two-day summit of heads of state was held virtually due to the coronavirus pandemic, which has killed at least 1.38 million people globally, with the world’s highest death tolls recorded in seven of the G-20 countries.