In 1939, French satirical magazines like Le Canard enchaîné had presented the qualities of a Persian cat as that of Reza Shah.
Pierre Dac could not hope for more beautiful publicity, even if he never imagined the scandal that an article of L'Os à moelle (journal) [fr] could declencehr.
Because the "French satirical newspapers", especially the weekly he runs, made fun of Reza Shah, diplomatic relations were interrupted.
From October 29, 1945 to early 1946, he served as Foreign Minister in the governments of Ebrahim Hakimi and Mohsen Sadr.
In 1950, as part of the reforms that led to the introduction of the Senate, Mohammad Reza Pahlavi appointed him to his ministre plénipotentiaire in Tehran, a position he held until October 1953.