UN Special Representative for Somalia Ahmedou Ould-Abdallah has told the UN Security Council that the Somali transitional government is on its heels trying to thwart repeated attempts by extremist groups to overthrow it. "Despite multiple constraints, the government is resisting and repelling multip le attempts to overthrow it and seize power illegally by force," the UN envoy said, adding: "Repeated attacks by Al-Shabaa b and Hizbul-Islam militants have sent the Horn of Africa nation into chaos, with refugees fleeing by the thousands."