SANAA, YEMEN - APRIL 01: Supporters of Houthis chant slogans as they protest against the Saudi-led 'Decisive Storm' operation in Sanaa, Yemen on April 1, 2015. (Photo by Mohammed Hamoud/Anadolu Agency/Getty Images)
SANAA, YEMEN - APRIL 01: Supporters of Houthis chant slogans as they protest against the Saudi-led 'Decisive Storm' operation in Sanaa, Yemen on April 1, 2015. (Photo by Mohammed Hamoud/Anadolu Agency/Getty Images)