People stand on the wreckage of the headquarters of Yemen's Islamist Islah party in the northwestern city of Amran July 14, 2014. According to local media, the five-story building was bombed by Shi'ite Muslim tribesmen known as Houthis during recent fighting against army forces in Amran, and there were no casualties. Yemen's president on Sunday demanded the withdrawal of Shi'ite Muslim tribesmen from the provincial city of Amran captured on July 8, in a stand-off that threatens to intensify turmoil in the Arab country. The Shi'ite Houthis, named after the tribe of their leader, said their fight was against rivals loyal to the Islamist Islah party. REUTERS/Khaled Abdullah (YEMEN - Tags: POLITICS CIVIL UNREST)