The project Nuncio's Secret Archives, funded under the PRIN 2017 program (nr. 2017JMPYTA), aims to reassemble, and enhance an extraordinary private archive, now divided between Italy and Kansas (USA), decisive for reconstructing the history of pontifical diplomacy in the crucial period between the peace of Augsburg (1555) and the Thirty Years War (1618-1648).

The archive, created by two of the greatest diplomats of the second half of the 16th century, Giovanni Francesco Commendone and Antonio Maria Graziani, will be reconstructed through the Graziani Archives portal. The construction of the portal, combined with a rigorous historical-archival investigation, will act as a driving force for a new interpretative perspective, capable not only of inserting the history of papal diplomacy in the European historiographical debate on multi-confessionality, but also of finally bringing the history of the Counter-Reformation to measure itself within a European dimension.