Professional Ethics in Diplomatic Practice: Lessons from Nigeria’s Foreign Service History

This study examines the development and contemporary state of professional ethics standards in Nigerian diplomatic practice, drawing on a historical review of the Nigerian Foreign Service from its establishment in 1960 to the present. The conduct of diplomatic professionals is governed by international conventions including the Vienna Convention on Diplomatic Relations of 1961, yet the internal professional ethics standards of the Nigerian Foreign Service have received limited systematic scholarly or policy attention. Using a professional historical and survey design, the study reviews Nigerian Foreign Service Act provisions, Foreign Service Institute training curricula, diplomatic misconduct records, and interviews with 30 serving and retired diplomats, supplemented by comparative ethics literature published between 2020 and 2024. The Diplomatic Ethics Theory and the Professional Conduct Framework provide the analytical lenses. Findings reveal that the Nigerian Foreign Service lacks a comprehensive domestic code of diplomatic conduct that operationalises the Vienna Convention obligations in the Nigerian institutional context. Reported cases of financial misconduct in mission accounts, nepotistic appointment of non-career political figures as ambassadors, and inadequate training in conflict of interest management are identified as systemic ethics challenges. Recommendations include the enactment of a Nigerian Diplomatic Ethics Code and mandatory annual ethics training for all serving officers. Keywords: diplomatic ethics, Nigerian Foreign Service, professional conduct, Vienna Convention, foreign policy.