In the previous years and in response to political and military challenges, African leaders have built a range of common institutions. They have decided for an approach that begins at the sub-regional level and moves into regional and continental levels. In the security field, in particular, the African Union has developed the African Peace and Security Architecture, which encompasses a range of conflict-management and conflict-prevention activities. Many successful results have been achieved by the African Union and its partners to ensure support for African Union peace operations and the development of a long-term capacity. However, the complexity and the necessities of modern peace operations imply that no single organization is capable of tackling the challenge on its own.