Ukraine 450,000 ethnic Germans from Ukraine and more than 200,000 Crimean Tatars were victims of forced deportations. Following the death of Stalin in 1953, Nikita Khrushchev became the new leader of the USSR. Having served as First Secretary of the Communist Party of Ukrainian SSR in 1938–49, Khrushchev was intimately familiar with the republic; after taking power union-wide, he began to emphasize "the friendship" between the Ukrainian and Russian nations. In 1954, the 300th anniversary of the Treaty of Pereyaslav was widely celebrated. Crimea was transferred from the Russian SFSR to the Ukrainian SSR. By 1950, the republic had fully surpassed
Nikita Khrushchev knowledge, and admitted that he had ordered the flights, calling them "a distasteful necessity". The admission stunned Khrushchev, and turned the U-2 affair from a possible triumph to a disaster for him, and he even appealed to U.S. Ambassador Llewellyn Thompson for help. Khrushchev was undecided what to do at the summit even as he boarded his flight to Paris. He finally decided, in consultation with his advisers on the plane and Presidium members in Moscow, to demand an apology from Eisenhower and a promise that there would be no further U-2 flights in Soviet airspace. Neither Eisenhower nor Khrushchev