E. Nahlik, Stanislaw Keywords: Diplomatic law | Mots clefs: Droit diplomatique | ABSTRACT Stanisław E. Nahlik, Professor at the Jagiellonian University in Krakow, devotes his course to some selected problems of diplomatic law, which for centuries has been considered as a separate body of rules within public international law. But all the rules relating to diplomacy do not fall under the international law: to make these rules operational, they must be integrated by the various States into their domestic legal…