President Hu Jintao also met with Japanese and Ukrainian leaders attending the Nuclear Security Summit.

Chinese President Hu Jintao (R) meets with Japanese Prime Minister Yukio Hatoyama in Washington April 12, 2010. [Xinhua]

During talks with Japanese Prime Minister Yukio Hatoyama, Hu Jintao called for boosting the strategic relationship between the two countries. He also proposed enhancing cooperation in the process of Asia's integration.

Hatoyama says Japan is willing to work with China and transform the East China Sea into an area of friendship and cooperation. He says Japan wants to strengthen technological cooperation in environmental protection.