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Articles 4 and 5 stated each country's territorial claims on Bulgarian-controlled territory (the line Gevgelija-Vardar River-Bregalnica-Osogovska Planina for the Serbs and Beles-Eleftheres Gulf for the Greeks), committed them to seek international mediation, and to meet Bulgarian armed aggression towards either signatory with all available forces.
At the village of Volkovija, an artificial bifurcation is created, as the waters of the Upper Radika are conducted into the artificial lake Mavrovo at the village of Mavrovi Anovi and from there, via the Mavrovo system of the hydroelectric power plants, into the Vardar river (in this bifurcational flow, it even receives a tributary, small stream of Beličica from the right).
Some ruins by the Vardar River near Jegunovce west of Skopje were known to the locals as "Strez's Fortress" (Стрезово кале, Strezovo kale).