Damaged vehicles are seen at the scene of a suicide attack at the Defence Ministry compound in Sanaa December 5, 2013, in this picture provided by the ministry. A car bomber and gunmen dressed in army... more 
Damaged vehicles are seen at the scene of a suicide attack at the Defence Ministry compound in Sanaa December 5, 2013, in this picture provided by the ministry. A car bomber and gunmen dressed in army uniforms attacked Yemen's Defence Ministry compound in the capital Sanaa on Thursday morning, killing at least 20 people, two sources said, in one of the worst attacks in Yemen in 18 months. REUTERS/Yemen's Defence Ministry/Handout via Reuters (YEMEN - Tags: CIVIL UNREST MILITARY) ATTENTION EDITORS - THIS IMAGE HAS BEEN SUPPLIED BY A THIRD PARTY. IT IS DISTRIBUTED, EXACTLY AS RECEIVED BY REUTERS, AS A SERVICE TO CLIENTS. NO SALES. NO ARCHIVES. FOR EDITORIAL USE ONLY. NOT FOR SALE FOR MARKETING OR ADVERTISING CAMPAIGNS less 
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Reuters | Photo By HANDOUT / REUTERS
Thu, Dec 5, 2013 10:34 AM EST