He, along with Honorable M. Hidayatullah of India, Honorable Blazo Jovanovic of Yugoslavia, Honorable Warren E. Burger of the United States, Honorable Terje Wold of Norway and Honorable Azu Crabbe of Ghana, was one of only six Chief Justice worldwide selected to be judges at a mock trial of the International Court of Justice organized by the Fifth Conference on World Peace through Law at the Third World Assembly of Judges held in Belgrade, Yugoslavia. The mock trial, known as the Belgrade Spaceship, took place in July 1971.