(WP) – The fighting in eastern Ukraine’s Donbas region is entering its fifth year. More than 10,000 people have been killed in this persistent conflict; 2,800 were civilians. Nearly two million people have been internally displaced or put at risk if they remain in their homes. Today, the Donbas war is among the worst humanitarian crises in the world, with frequent attacks occurring from both sides across the oblasts (provinces) of Donetsk and Luhansk. Before the war, this compact, heavily urbanized and industrialized region held nearly 15 percent of Ukraine’s population (6.6 million) and generated 16 percent of its gross domestic product.