The international situation of the 90s. XVI century. was quite difficult, especially for states that had sea or land borders with the Ottoman Empire. The thirteen-year war - the "Long Turkish War" between the High Port and the Holy Roman Empire and Shah Abbas' active anti-Ottoman policies contributed to the creation of an anti-Ottoman coalition. In this situation, given the difficult situation of the Holy Roman Empire, which had been at war with the Ottomans since 1593, the Roman Curia decided to take the initiative into its own hands and send its own embassy to Persia in 1604 to negotiate with the Shah. Papal diplomats turned out to be participants in the events associated with the unexpected death of Tsar Boris and the "accession" to the Russian throne of False Dmitry.