Just a few short years ago, Yemen was judged to be among the poorest countries in the world, ranking 154th out of the 187 nations on the U.N.’s Human Development Index. One in every five Yemenis went hungry. Almost one in three was unemployed. Every year, 40,000 children died before their fifth birthday, and experts predicted the country would soon run out of water.Such was the dire condition of the country before Saudi Arabia unleashed a bombing campaign in March 2015, which has destroyed warehouses, factories, power plants, ports, hospitals, water tanks, gas stations, and bridges, along with miscellaneous targets ranging from donkey carts to wedding parties to archaeological monuments. Thousands of civilians — no one knows how many — have been killed or wounded. Along with the bombing, the Saudis have enforced a blockade, cutting off supplies of food, fuel, and medicine. A year and a half into the war, the health system has largely broken down, and much of the country is on the brink of starvation.