1. Immanuel Kant Baltic Federal University, Institute of Geopolitical and Regional Studies, A. Nevskogo str., 14, 236016, Kaliningrad, Russia;
2. Immanuel Kant Baltic Federal University, A. Nevskogo str., 14, 236016, Kaliningrad, Russia;
3. Institute of Geography RAS, Center for Geopolitical Studies, Staromonetny pereulok, 29, 119017, Moscow, Russia;