Hedin joined the Ministry of Foreign Affairs in Stockholm as an attaché in 1949 and served the following 40 years in many countries, including as ambassador in Dar es Salaam, Buenos Aires and Rome.
He was embassy counselor there from 1964 to 1965[2] and Deputy Director at the Foreign Ministry in Stockholm and head of its Financial Agency (Ekonomibyrå) in 1966.
Back in Sweden, Hedin served as Deputy Marshal of the Diplomatic Corps (Introduktör av främmande sändebud) from 1990 to 1993.
[2] He was a member of the Swedish Publicists' Association[1] and after retirement, he participated frequently in the public debate with high-profile posts.
[6] Together with journalist Göran Elgemyr, Hedin presented documents that highlighted the Swedish Central Bank's transactions with the so-called Nazi gold.