1954 transfer of Crimea Ukraine inexorably to Russia, "Eternally Together", as a poster commemorating the event of 1954 proclaimed. The transfer was described by some of the Supreme Soviet as a gift to commemorate the 300th anniversary of the Treaty of Pereyaslav in 1654 when the Cossack Rada apparently decided to unify with Muscovy, putting in place the eventual acquisition of Ukraine by Russia. Other reasons given were the integration of the economies of Ukraine and Crimea and the idea that Crimea was a natural extension of the Ukrainian steppes. There was also a desire to repopulate parts of the Crimea which had suffered
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