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SANAA, YEMEN - JULY 8: Yemeni civilians in Amran flee from the clashes between army and Shiite Houthi militants to capital Sanaa, Yemen on July 8, 2014. (Photo by Mohammed Hamoud/Anadolu Agency/Getty Images)

SANAA, YEMEN - JULY 8:  Yemeni civilians in Amran flee from the clashes between army and Shiite Houthi militants to capital Sanaa, Yemen on July 8, 2014. (Photo by Mohammed Hamoud/Anadolu Agency/Getty Images)