パグウォッシュ会議
On the international stage, Okoye attended 12 Pugwash Conferences on Science and World Affairs in the years 1979–91, serving as a member of Pugwash Council from 1988–93. These meetings, started in 1957, promoted dialogue between nations to free the world from the dangers of nuclear and other weapons of mass destruction. In later years they sought also to develop and support the use of scientific, evidence-based policymaking. Okoye's contributions were in the area of science for development.