TOPSHOT - Tribal gunmen loyal to the Huthi movement chant slogans during a gathering in Sanaa to show support to the Shiite Huthi militia against the Saudi-led intervention in the country on September 10, 2018. - Nearly 10,000 people have been killed since Saudi Arabia and its allies intervened on behalf of the government in 2015, triggering what the UN calls the world's worst humanitarian crisis. (Photo by MOHAMMED HUWAIS / AFP)