Правительствующий сенат
After Osterman's father fell into disgrace, Ivan Osterman was transferred from the Imperial Guards to the regular army and then sent abroad, where he continued his education. In 1757, Osterman was in the Russian service again. He held diplomatic posts in Paris and Stockholm, where he would exercise considerable influence on Gustav III of Sweden. In 1774, Osterman was appointed a member of the Governing Senate.