It’s incredible that article after article talking about these Medvedev comments, don’t provide the context that they were immediately after a top US military general bragged about being able to take the Russian region of Kaliningrad in one day in the event of any conflict.
They all make it sound as if he said it for no reason, not in response to anything.
https://kyivindependent.com/us-general-says-nato-could-seize-russias-kaliningrad-unheard-of-fast/