1. African Union. (2019). African Union celebrates Africa Day and launches memorial wall in honour of African heroes and heroines. https://au.int/en/pressreleases/20190527/african-union-celebrates-africa-day-and-launches-memorial-wall-honour-african. Accessed 16 February 2022.
2. Brosig, M. (2015). Cooperative peacekeeping in Africa: Exploring regime complexity. Routledge.
3. Council of the European Union. (2018). Proposal of the High Representative of the Union for Foreign Affairs and Security Policy, with the support of the Commission, to the Council for a Council Decision establishing a European Peace Facility 13 June 2018.
4. Fawcett, L., Ponjaert, F., & Telò, M. (2015). Introduction. In M. Telò, L. L. Fawcett, & F. Ponjaert (Eds.), Interregionalism and the European Union (pp. 1–14). Ashgate.
5. George, A., & Bennett, A. (2005). Case studies and theory development in the social sciences. MIT Press.