Shiite rebels known as Houthis hold up their weapons to denounce the Saudi-led airstrikes as they chant slogans during a protest in Sanaa, Yemen, Monday, April 27, 2015. Saudi-led airstrikes on Monday targeted Shiite rebels across Yemen, killing several people in the southern port city of Aden and striking a weapons depot in the rebel-held capital, officials and witnesses said. (Photo by Hani Mohammed/AP Photo)
