%0 Journal Article %T Exclusivity of federal states and modern theory of federalism %A Romaykin, I.A. %K the federative state, Montevideo Convention, exclusivity of the federative states, constituent entities of a federal state, Constitution of Bosnia and Herzegovina, the Union State of Russia and Belarus, legal status of the Kaliningrad region, post-Soviet space, supranationality of statehood %J Vestnik of the St. Petersburg University of the Ministry of Internal Affairs of Russia %D 2026 %N 2026 %P 11 %I SAINT-PETERSBURG UNIVERSITY OF THE MINISTRY OF INTERNAL AFFAIRS OF THE RUSSIAN FEDERATION