This news is fake, and the origin of the map is unclear. Neither Poland nor Lithuania has ever made territorial claims to Russia.
Russian propagandists write that NATO allegedly officially divided the Kaliningrad region between Poland and Lithuania on its own maps. At the same time, none of the publications on this topic explain the context of the so-called division and do not contain links to sources. The map itself remains the only proof of the news.

Needless to say, in reality the Alliance did not publish such a map, nor did it make any statements on the Kaliningrad region. Likewise, neither Poland nor Lithuania expressed such intentions. No source wrote about this «news» at all, except for highly suspicious pro-Russian ones. The origin of the map is also unclear: it was probably first published by one of the Russian propaganda sources.
Interestingly, Russia has been spreading fakes about the alleged threat to Kaliningrad from the West since at least 2016, according to the EUvsDisinfo database, an EU project designed to document disinformation campaigns. For example, earlier, the Russians had already written that the United States and Germany were planning to annex Kaliningrad and that Lithuania had organized a blockade of Kaliningrad (although they only imposed a ban on Russian cargo on the territory of Lithuania as part of sanctions due to a full-scale invasion). Even similar news that Poland and Lithuania had allegedly divided the Kaliningrad region on the map had already been spread by the Russian propaganda back in 2020. At the time it was announced by the infamous propagandist Dmitry Kiselyov in the Vesti Nedeli program. Despite the fact that Russia has been scaring its own citizens for almost 10 years with so-called territorial claims by NATO and the West, the scenarios invented by propagandists never came true.
We also recently refuted a news story on the same topic about NATO preparing a provocation in Kaliningrad.