Speech given at International Law Department of Mackenzie Law School, São Paulo, Brazil, 1987.

Speech given at International Center of Florida, Miami, Florida, USA, 1986.

Speech given at Business Development Program of SENAC, São Paulo, Brazil, 1986.

Speech given at Ministry of Foreign Relations of Brazil and United Nations Organisation (UNO), Brasilia, Brazil, 1985.

Speech given at Ministry of Foreign Relations of Brazil and United Nations Organization (UNO), Rio de Janeiro, Brazil, 1985.