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People walk near historical buildings in Sanaa, Yemen, on July 21, 2019. Yemen has been mired into a civil war since late 2014 when Shiite Houthi rebels overran much of the country and seized all northern provinces, including the capital Sanaa. The civil war has killed more than 10,000 people, mostly civilians, and displaced 3 million others. (Xinhua/Mohammed Mohammed)
