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 in world history". The Soviet Union spent 7% of its national income between 1954 and 1959 on aid to China. On his 1954 visit to China, Khrushchev agreed to return Port Arthur and Dalian to China, though Khrushchev was annoyed by Mao's insistence that the Soviets leave their artillery as they departed. Mao bitterly opposed Khrushchev's attempts to reach a "rapprochement" with more liberal Eastern European states such as Yugoslavia. Khrushchev's government, on the other hand, was reluctant to endorse Mao's desires for an assertive worldwide revolutionary movement, preferring to conquer capitalism through raising the standard of living in communist-bloc