Kruschev transferred Crimea to Ukraine in 1954. Maybe a uniquely Soviet way to apologize for Stalin’s BS, and of course, Nikita was Ukrainian himself.
Of all the things you listed, I’d add North Korea to the list. Kim the Third seems more than a little erratic in my opinion, and maybe he figures this would be a great time to indulge in a little ****-waving to the South.
Not true. Khrushchev was an ethnic Russian, born near the Russian border with Ukraine. But he did serve as boss of Ukraine, under Stalin, and this empty gesture at the time (Moscow was still boss, regardless of which Soviet Socialist Republic it belonged to), was to win over the Ukrainians that he needed to win his power struggle after Stalin's death.