The Lithuanian defense minister said yesterday that they are now seeing the Kremlin remove troops from Kaliningrad to deal with the Kursk operation.
The couple of thousand tanks kept there were moved out in 2023 and most missiles and artillery too.
Kaliningrad is basically left defenseless. And this puts a lie to the "we're afraid of NATO" - NATO isn't going to do anything.
However if Muscowy does collapse, then the Czechs have a claim on Kralovesky kraj