Fire and smoke rises after a Saudi-led airstrike on Sanaa, Yemen, Tuesday, April 28, 2015. Yemen's exiled government on Monday declared three areas in the country engulfed in fighting between Shiite rebels, their allies and pro-government forces as "disaster" zones, including the southern port city of Aden, and said that the last month of violence has claimed 1,000 civilian lives. (AP Photo/Hani Mohammed)

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