for the prevention of HIV transmission among civilian and military personnel and host communities. The Secretary-General proposed that the mandate of UNMIL would be to support the National Transitional Government of Liberia and the other parties in the effective and timely implementation of the Comprehensive Peace Agreement; to monitor adherence to the ceasefire agreement of June 17, 2003; to assist the National Transitional Government in extending State authority throughout Liberia; to provide security at key government installations, in particular, ports, airports and other vital infrastructure; to ensure the security and freedom of movement of United Nations personnel; to facilitate the free movement of people, humanitarian assistance and goods; to support the safe and sustainable return of refugees and internally displaced persons; and to protect civilians under imminent threat of physical violence in the areas of immediate deployment of United Nations formed military units. In addition, the force would advise, train and assist the Liberian law enforcement authorities and other criminal justice institutions; assist the National Transitional Government in the implementation of a disarmament, demobilization and reintegration programme; guard weapons, ammunition and other military equipment collected from ex-combatants and assist in their subsequent disposal or destruction; assist in the preparation of elections; monitor and report on the human rights situation and provide training and capacity-building in the field of human rights and child protection; provide support for gender mainstreaming, including training; support the establishment and operations of the Truth and Reconciliation Commission; and cooperate with ECOWAS, the African Union and the United Nations on cross-cutting political and security issues. In his report the Secretary-General observed that the transfer of power from President Charles Taylor to Vice-President Moses Blah and the signing of the Comprehensive Peace Agreement by the Liberian parties offered a unique window of opportunity to end the suffering inflicted on the people of Liberia and to find a peaceful solution to a conflict that had been the centre of instability in the subregion. While the United Nations and the international community at large stood ready to support the Liberian peace process, the effective and successful implementation of the Peace Agreement remained the primary responsibility of the Liberian parties themselves, he stressed. Establishment of UNMIL In September 2003, the Security Council welcomed the Secretary-General's report of 11 September 2003 and its recommendations and unanimously adopted Resolution 1509 establishing UNMIL with up to 15,000 United Nations military personnel, including up to