In parliament, Larsonneur serves on the
Defence Committee. In addition to his committee assignments, he is a member of the French-Danish Parliamentary Friendship Group, the French-Irish Parliamentary Friendship Group and the French-Malian Parliamentary Friendship Group. In late 2019, Larsonneur was one of 17 members of the Defence Committee who co-signed a letter to
Prime Minister Édouard Philippe in which they warned that the 365 million euro ($406 million) sale of aerospace firm
Groupe Latécoère to U.S. fund
Searchlight Capital raised “questions about the preservation of know-how and France’s defence industry base” and urged government intervention. In the
2022 French legislative election, he ran as a dissident
La République En Marche! candidate, standing opposed to
Ensemble Citoyens. ==Political positions==