In 1918, he was appointed attaché to the Swedish foreign mission in Paris, and the following year to London. In 1920, he got a permanent position at the Swedish
Ministry for Foreign Affairs, and during the beginning of the 1930s he was Sweden's envoy to Istanbul, Sofia, Athens, Warsaw and Bucharest. In 1938, he was appointed
State Secretary for Foreign Affairs and held that position during World War II, up until 1945. During the war he was also Sweden's envoy to Paris, so the Deputy State Secretary for Foreign Affairs,
Vilhelm Assarsson, had to step in as Acting Secretary on a number of occasions. He was appointed Ambassador of Sweden to the United Kingdom 1947–48, and Ambassador to the United States 1948–58. He was nominated for
Secretary-General of the United Nations in the
1953 selection, but he declined the nomination. After World War II, Boheman falsely stated that "ignorant and over-diligent American economic spies" had "accused the Wallenberg group unjustly of having acted in collusion with the Germans" related to Bosch interests. In fact, this group helped cloak Nazi Germany's interests in the United States. He was a member of the
Riksdag 1959–1970 for the
Liberal People's Party, the Gothenburg constituency, where he sat in the First Chamber of the then-
bicameral Riksdag. He was
Speaker of the First Chamber from 1965 until 1970, when the two Chambers merged into one. Alongside his political mandates Boheman was also chairman of the board of directors of
Saab Automobile (1958–1970),
Skandinaviska Enskilda Banken and several other companies within the
heavy industry sector. ==Personal life==