The United Nations Mission in Sierra Leone (UNAMSIL) was active from 1999 to 2006. It was one of the most difficult peacekeeping missions of the 21st century.
The civil war in Sierra Leone began when the Revolutionary United Front campaigned to remove the then President Joseph Momoh. When things went out of hand, the UN was asked to help. Several attempts for negotiations were made after an exploratory mission, but none of them were successful.
So, the UN employed the United Nations Mission in Sierra Leone (UNAMSIL) to make sure that the Lome Peace Accord was implemented. It was an agreement to end the civil war.
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