The mission would consist of up to 6,000 troops including 260 military observers and would take over the tasks of the previous UNOMSIL operation which was terminated upon the establishment of UNAMSIL in addition to participating alongside ECOMOG.[4] Furthermore, acting under Chapter VII of the United Nations Charter, the Council authorised the mission to take necessary measures for its own security to ensure the freedom of movement of its personnel and to protect civilians against direct threats.[5]