He held that position from 1 June 2005 (assuming this role one month later than scheduled because of Prince Rainier III's death) until 29 March 2010, having been appointed three months earlier by the prince and the French government.
Ia menempati jabatan itu sejak 1 Juni 2005 (memulai posisinya satu bulan kemudian karena kematian Rainier III) setelah ditunjuk tiga bulan sebelumnya oleh pangeran dan pemerintahan Prancis.