Armed tribesmen check the damage at the house of Sheik Sadeq al-Ahmar, the head of the powerful Hashid tribe, caused following clashes with Yemeni security forces in Sanaa, Yemen, Thursday, May 26, ... more 
Armed tribesmen check the damage at the house of Sheik Sadeq al-Ahmar, the head of the powerful Hashid tribe, caused following clashes with Yemeni security forces in Sanaa, Yemen, Thursday, May 26, 2011. Yemen's government said 28 people were killed in an explosion at a weapons storage site Thursday, but the opposition claimed military forces shelled a building used by tribal fighters who have risen up against President Ali Abdullah Saleh and warn of civil war if he refuses to step down. less 
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Associated Press | Photo By Mohammed Al-Sayaghi
Thu, May 26, 2011 9:05 AM EDT