In this photo provided by UNICEF, a group of refugees rests under the shade of a tree to protect themselves from the sun and heat after crossing into the village of Koufroun, near the Chad-Sudan border, in Chad Thursday, April 27, 2023. Heavy explosions and gunfire rocked Sudan’s capital early Friday, residents said, despite the extension of a fragile truce between the county’s two top generals whose power struggle has killed hundreds. (Donaig Le Du/UNICEF via AP)