KHARTOUM Families gather by the shallow waters of the Nile River at the Tuti island where the Blue Nile and the White Nile meet in Khartoum on May 1, 2019. Sudan on Tuesday marked two years of a war that has killed tens of thousands, displaced 13 million and triggered the world's worst humanitarian crisis — with no signs of peace. Fighting erupted on April 15, 2023 between the army, led by Abdel Fattah al-Burhan, and the paramilitary Rapid Support Forces, headed by his former deputy Mohamed