Agreement reached and implemented South Africa (1990–1998) © UN Photo/Chris Sattlberger Pretoria, 1994: Crowds listening to the speech of President Nelson Mandela. Read more about South Africa (1990–1998) Somaliland (1990–1994) © Paul Hetherington Read more about Somaliland (1990–1994) PNG Bougainville (1997–2005) © Nick Turner/UNDPThe flags of Peit, Papua New Guinea and the Autonomous Region of Bougainville Read more about PNG Bougainville (1997–2005) Mali (1990–1992) © UN Photo/Harandane Dicko Read more about Mali (1990–1992) Liberia (2003–2011) © UNMIL Photo/Staton Winter Liberia commemorates the 2003 Peace Agreement that ended the civil war. Read more about Liberia (2003–2011) Benin (1990–1991) © Thierry Vilmus Read more about Benin (1990–1991)