 From 1976 to 1978, he served as a Consultant to the World Health Organization's Extended Program of Immunisation (EPI).In his capacity, he advised and assisted the Health Services in Brasil, Peru, Ecuador, Venezuela, Honduras, Costa Rica, Guatemala, Uganda, Philippines and Malaysia

From 1980 to 1982, he created and led The Soviet Alternative, an initiative to moderate the arms race by using market & financial mechanisms.From 1982 to 1984, he co-founded and was the director of the Council for Arms Control, a coalition of leaders in politics, armed forces, universities and the church.