In this August 1, 2019, file photo, Houthi rebel fighters ride on trucks mounted with weapons, during a gathering aimed at mobilizing more fighters for the Houthi movement, in Sanaa, Yemen. Airstrikes by the Saudi-led coalition fighting Yemen’s rebels Houthi hit a detention center in southwestern province of Dhamar, officials and the rebels’ health ministry said Sunday. (Photo by Hani Mohammed/AP Photo/File)
