Internal battle in the EU around the European External Action Service, the diplomatic arm led by Kaja Kallas. Criticized for more than a year, it is the subject of reform projects carried out by several States, including France, while the President of the Commission, Ursula von der Leyen, seeks to extend her prerogatives in matters of foreign affairs, creating institutional rivalry. Interview with Sébastien Maillard, special advisor at the Jacques Delors Institute and specialist in European institutions.