2. Aina, D., 2020. Technical Aid Corps: Nigeria’s Soft Diplomacy Since 1987. https://guardian.ng/opinion/technical-aid-corps-nigerias-soft-diplomacy-since-1987/.
5. Asobie, H., 2014. Nigeria’s National Interest in a Globalising World: A Theoretical Perspective. In: Contemporary Challenges in Nigeria, Africa and the World: Reciprocity and Nigeria’s African Policy: Beyond the Challenge of Incapacity. Akinterinwa, B., (Ed.). Lagos: Nigerian Institute of International Affairs. pp 275–314. http://eprints.covenantuniversity.edu.ng/6781/1/State%20Failure%2C%20Terrorism....compressed.pdf, 8. 11. 2021.
10. Fischer, R., 2012. The Peace of Westphalia and the World State: A Case for Casual Pluralism in International Relations. Budapest: Central European University, Department of International Relations and European Studies.
17. Kia, B., Nwigbo, T., and Ojie, P., 2017. Foreign Policy Strategy of the Federal Republic of Nigeria 1960-2012: the Missing Link. Journal of International Relations, Media and Mass Communication Studies, May 2017, Vol. 3, No. 2, pp 10–27.
22. Musah, A., 2011. ECOWAS and Regional Responses to Conflicts. In: ECOWAS and the Dynamics of Conflict and Peacebuilding. Jaye, T., Garuba, D., Amadi, S. (Eds.). Dakar: Council for Development of Social Science Research in Africa (CODESRIA), pp 115–130. https://codesria.org/IMG/pdf/9-5.pdf, 10. 11. 2021.
24. Ofeibea, Q., 2015. Nigerian President: U.S. Refusal to Provide Weapons Aids Extremism. https://www.npr.org/2015/07/23/425654481/nigerian-president-u-s-refusal-to-provide-weapons-aides-extremism.
26. Olowojolu, O., 2017. Mid-Term Report of President Muhammadu Buhari’s Foreign Policy. Journal of Arts and Contemporary Society, 26.03.2019, Vol. 9, No. 2, pp 1–12.
29. Ota, E., and Ecoma, C., 2016. Nigerian Foreign Policy and the Democratic Experiment: the Lessons of History and Options for the 21st Century. International Journal of Applied and Advanced Scientific Research, 2016, Vol. 1, No. 1, pp 9–18.
30. The World Bank Data: International Institute for Strategic Studies, the Military Balance, 2018. Armed Forces Personnel, Total – Nigeria. https://data.worldbank.org/indicator/MS.MIL.TOTL.P1?locations=NG, 3. 6. 2021.
33. Umejei, E., 2015. China’s Engagement with Nigeria: Opportunity or Opportunist? University of the Witwatersrand Johannesburg, Gauteng, South Africa.