(The Washington Post) –  The boy was motionless on an operating table, his life slowly fading away. His eyes were closed, his face was half-covered by an oxygen mask, and an IV was connected to his limp right arm. His father was standing next to him, refusing to give up. He waved at the flies circling his son. He adjusted the wet towel atop the boy’s head, a feeble attempt to lower his high fever. He squeezed his small left hand. In Yemen, described as having the world’s worst humanitarian crisis, a child dies every 10 minutes from preventable causes, according to the United Nations.