SANAA, YEMEN - APRIL 06: A group of the Ensarullah Movement (Houthis) members stage a protest against Saudi-led operations, at Zubayri Street in Yemen on April 06, 2015 in Yemeni capital Sanaa. (Photo by Mohammed Hamoud/Anadolu Agency/Getty Images)
SANAA, YEMEN - APRIL 06: A group of the Ensarullah Movement (Houthis) members stage a protest against Saudi-led operations, at Zubayri Street in Yemen on April 06, 2015 in Yemeni capital Sanaa. (Photo by Mohammed Hamoud/Anadolu Agency/Getty Images)