UNITED NATIONS MISSION IN SIERRA LEONE UNAMSIL On 22 October 1999, the Security Council established UNAMSIL to cooperate with the Government and the other parties in implementing the Lome Peace Agreement and to assist in the implementation of the disarmament, demobilization and reintegration plan. On 7 February 2000, the Council revised UNAMSIL's mandate. It also expanded its size, as it did ...