The Norwegian liberal politician Gunnar Garbo (1924-2016) served as a guest researcher at PRIO in 1974 and wrote a book published by Gyldendal in 1975: Opprustet og forsvarsløs. Om rustningskappløpet og arbeidet for internasjonal nedrustning [Armed and Defenceless. On the Arms Race and the Work for International Disarmament].