Between 31 May and 9 June 2008, representatives of Somalia's federal government and the moderate Alliance for the Re-liberation of Somalia (ARS) group of Islamist rebels participated in peace talks in Djibouti brokered by the former United Nations Special Envoy to Somalia, Ahmedou Ould-Abdallah. The conference ended with a signed agreement calling for the withdrawal of Ethiopian troops in exchange for the cessation of armed confrontation. Parliament was subsequently expanded to 550 seats to accommodate ARS members, which then elected Sheikh Sharif Sheikh Ahmed, the former ARS chairman, to office.