evidence: As can be seen, the issue of belonging of Kaliningrad Oblast is extremely sensitive for the Russian Federation. It considers all threatening scenarios, one of which is the spread of sentiment among the residents of Kaliningrad Oblast of the idea of integration into one or more NATO and EU countries. Therefore, being aware of the risks of acquisition of land plots by foreign nationals and legal entities, the territories of Kaliningrad Oblast have been included in the aforementioned Presidential Decrees. [...] For example, back in 2000, some Kazakh sources reported that the Russian Federation and Kazakhstan had different approaches to the delineation of the territory. The border there runs along the fairway of the Kihach River. On land, however, the delineation allowed the establishment of reference points for the establishment of borders in the Caspian Sea, where the disputed territory is a scattering of islands. The Kazakh side was primarily interested in Ukatny Island [8]. [...] [8].Information: Ukatny is a densely covered island of 1200 square kilometres, which is directly connected with the promising oil field of Kurmangazy through the Ukatny embayment. According to the estimates, the reserves of this field may vary from 550 to 1800 million tons of oil.