UNDP-CSO, 2005. The experiences presented in this report underscore the critical importance for UNDP and other international organizations to engage with civil society actors at all levels in preventing violent conflict and rebuilding peace. In many cases, the credibility and effectiveness demonstrated by CSOs have led to a transformation in the nature of their relationship with governments and the UN – from programme sub-contractors to policy advisors and interlocutors. This evolution in the scope of partnership with civil society organizations is essential in addressing the growing challenges of conflict prevention and peace building.