Yemen exhibition highlights human cost of war People visit an art exhibition displaying art work by Yemeni painters to show the suffering of the Yemeni people due to the ongoing conflict at the People's Development Foundation in Sanaa. About 24 Yemeni artists participated with more than 100 pieces of art work in an exhibition in Sanaa to attract attention to the ongoing war in Yemen which has killed nearly 10,000 people since 2015, most of them civilians, and triggered what the United Nations has described as the world's worst humanitarian crisis.