He served as the United Nations under-secretary-general for Peacekeeping Operations from January 1997 to September 2000; he was also the first French person to be nominated to the position.

[4] In 1981, he left the diplomatic service to become the chief of staff of Minister of Communications of France Georges Fillioud.

[5] In the spring of that year, he joined Schlumberger Ltd as special advisor to Jean Riboud, where he was tasked with the creation of the TV channel La Cinquième (now France 5).

[4] Miyet then returned to France as deputy director general of cultural, scientific and technical relations of the French Ministry of Foreign Affairs, where he stayed until 1991.

Resistance was overcome when the French were promised the under-secretary-general seat, which was filled by Miyet, instead of the former advisor of Annan, Iqbal Riza.