A Shiite Houthi rebel holds his weapon as he attends a rally to protest Saudi-led airstrikes, in Sanaa, Yemen, Monday, Aug. 24, 2015. The Saudi-led coalition fighting Shiite rebels in Yemen doubled its near-daily airstrikes in the central province of Marib and the adjacent border area of Jawf on Monday, paving the way for allies on the ground to push north toward Shiite rebel strongholds, military and security officials said. (AP Photo/Hani Mohammed)
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