These breakthrough accomplishments added to a solid record of achievements. UN blue helmets disarmed more than 75,000 ex-fighters, including hundreds of child soldiers, and destroyed more than 42,000 weapons and 1.2 million rounds of ammunition. The UN assisted more than half a million Sierra Leonean refugees and internally displaced people to return home and supported training for thousands of local police. The UN helped the government to combat illicit diamond mining that fuelled the conflict, and to establish control over the affected areas. With the UN's help, Sierra Leone's citizens voted in successive free and fair elections for the first time in their history.

The UN Integrated Peacebuilding Office helped Sierra Leone to consolidate progress, addressing tensions that could have caused a relapse into conflict while strengthening institutions and promoting human rights. It helped the government to bolster the political process, emphasizing dialogue and tolerance, and further strengthened the national police, even supporting the establishment of the first Transnational Organized Crime Unit in West Africa.

Our final mission is departing Sierra Leone but a United Nations country team will remain until long-term development takes root, supporting good governance, quality education, health services and other essential conditions for progress.

Other countries now mired in fighting, divided by hatred and wounded by atrocities, can draw hope from Sierra Leone. Its resilient people have given peacekeeping their greatest possible vote of confidence by sending troops to serve where the UN flag flies today. They understand that national goodwill backed by international support can enable even the most devastated areas to enjoy lasting peace.

The author is the secretary-general of the United Nations.