Yemeni deaf-dumb and disabled students take part in a rally demanding an immediate end of conflict in front of the UN office in Sanaa, Yemen, on Feb. 25, 2018. The Saudi-led coalition intervened in the Yemeni conflict in March 2015. The war has killed over 10,000 Yemenis, mostly civilians, displaced 3 million others and triggered the worst humanitarian crises. (Xinhua/Mohammed Mohammed)