Relations continued to deteriorate in 1960, as both the USSR and China used a Romanian Communist Party congress as an opportunity to attack the other. After Khrushchev attacked China in his speech to the congress, Chinese leader Peng Zhen mocked Khrushchev, stating that the premier’s foreign policy was to blow hot and cold towards the West. Khrushchev responded by pulling Soviet experts out of China. (via Nikita Khrushchev - Wikipedia, the free encyclopedia)