The minister of King Louis XV of France (1715–74), the duc de Choiseul, had extensive experience dealing with the church as the French ambassador to the Holy See and was Europe's most skilled diplomat. "When one has a favour to ask of a Pope", he wrote, "and one is determined to obtain it, one must ask for two". Choiseul's suggestion was advanced to the other ambassadors and it was that they should press, in addition to the Jesuit issue, territorial claims upon the Patrimony of Saint Peter, including the return of Avignon and the Comtat Venaissin to France, the duchies of Benevento and Pontecorvo to Spain, an extension of territory adjoining the Papal States to Naples, and an immediate and final settlement of the vexed question of Parma and Piacenza that had occasioned a diplomatic rift between Austria and Pope Clement XIII.