A ship carrying the US military's latest transport aircraft Osprey arrived in Japan on Monday morning amid protests over safety issues.
A U.S. F-16 fighter jet crashed into the Pacific Ocean off the coast of northern Japan on Sunday and efforts are underway to rescue the pilot, a spokeswoman for the Misawa Air Base said.
Japan's ambassador to China returned to Beijing on Monday after Tokyo summoned him to discuss the escalating tension over the Diaoyu Islands.
Japan called its ambassador to China back on Sunday for discussions on simmering tension over islands in the East China Sea.
A foreign ministry spokesman said Friday that China is "strongly dissatisfied" with Japan over the Diaoyu Islands issue.
China's "indisputable sovereignty" over the Diaoyu Islands in the East China Sea must be respected by Japan, China said on Wednesday.
Analysts said Tokyo's political stance toward China's Diaoyu Islands will cast a shadow over relations between China and Japan.
The Republic of Korea's government is looking into the mismanagement of what would have been the first military pact with Japan.
Medvedev has braved both unpredictable weather and quite predictable reactions from Tokyo by visiting the disputed Southern Kuril archipelago.
Japanese politicians and prominent academics from China and Japan urged Tokyo on Tuesday to abandon its outdated foreign policy of leaning on the West and accept China as a key partner as important as the United States.
Joint effort, cooperation and exchange will plays key roles in developing China-Japan relations, said Wang Chen, minister of the Information Office of the State Council, during the opening ceremony of the Eighth Beijing-Tokyo Forum.
Overall relations between China and Japan will advance despite some problems.