An al-Qaida spokesman has urged Islamist militants in Somalia to fight a United Nations peace keeping force planing to deploy in the war-ravaged African nation. In a 19-minute video posted on a militant Web site Sunday, Abu Yahya Al-Libi also urged Muslim extremists to set up in an Islamic government in Somalia. The Somali government and the opposition Alliance for the Re-Liberation of Somalia agreed this month to "end all acts of armed confrontation" within 30 days and remove Ethiopian troops, once the UN peacekeeping force is deployed. Al-Libi is one of the most visible faces of al-Qaida on the Internet, and has released five statements so far this year. He gained fame for escaping from Afghanistan's notorious Bagram prison in 2005.