Kravchuk OM, Zinko YA. Intelligence gathering and state secret protection services of the Ottoman Empire in the 16th century (Review of the publication: Gurkan E. S. The Sultan’s Spies: Intelligence, Sabotage, and Corruption Networks of the 16th Century. Lviv: Annetta Antonenko Publishers; Kyiv: Nika - Center, 2023. 320 p.). nzhist [Internet]. 2026 Jun. 1 [cited 2026 Sep. 16];(56):215-8. Available from: https://intranet.vspu.edu.ua/nzhist/index.php/nzhist/article/view/1185