Upvote:-2
The answer is quite simple. Because of the resistance of the Forest Brothers until the mid 50s, Stalin respected the Lithuanians. So Sneikus was able to tell Stalin he didn’t want the former East Prussia, Stalin respected his wishes. Obviously different than you can’t say no to Stalin one poster suggested here.
Upvote:9
I checked Richard Krickus' citation to support the statement that Snieckus rejected the offer of Kaliningrad. It is indeed fn 8 in chapter 2. I quote "Interviews in [sic] Lithuanian Foreign Ministry, spring 1998." That is it. Not even the interviewees are named. I highly suspect they merely repeated the myth. If not a myth, there would have been a source for them to identify. In short, the claim is not substantiated by Krickus' book.
Upvote:10
Richard J. Krickus affirms that Sniečkus rejected the offer of the enclave in his book, The Kaliningrad Question. Sniečkus sought to avoid the "thorny problems" of Latvia and Estonia with Russian speakers. The specific claim that Sniečkus refused Krushchev's offer of Kaliningrad is detailed by footnote 8 in chapter 2 if you mean to find a primary source.
Edit: Per the answer of user @poopsie, the footnote reads: "Interviews in [sic] Lithuanian Foreign Ministry, spring 1998." Hmmm.