[aguaviva]

Khrushchev in particular had a strong southern accent.

You can take the matter up with his granddaughter if you like:

   I remember my grandmother saying that Khrushchev spoke Ukrainian all the time and that it was so embarrassing because it wasn’t the real thing! That said, Khrushchev was a Russian. It’s erroneous to say that he was Ukrainian—as Henry Kissinger just did, in a recent article. He did not transfer Crimea to Ukraine because he was Ukrainian. He was a Russian.

https://macleans.ca/politics/worldpolitics/nina-khrushcheva-...