During the war against the rebellious Serbian state, the Ottoman Empire tried to resolve the issue of Serbia in various ways, including diplomatic efforts, and the use of force. One of the letters, written on 13 July 1807, in the office of either Grand Vizier or another high-ranking official of Porta who had the vizier rank, indicated how the Ottoman authorities acted that year in order to conquer Serbia. The letter was critically arranged, along with the Serbian translation and transcription to the contemporary Turkish spelling. This resource contained information about an unsuccessful mediating mission of a Metropolitan of the Ecumenical Patriarchate, as well as on the decision to stop the uprising by force. Comparing it with other source...