Japan's cabinet has approved a significant shift in its 60-year pacifist policy, widening its military options in the midst of heightened tensions with China over disputed islands.
The contentious move will allow the military to help defend other nations in what is known as "collective self-defence."
Reacting to the development, China said Tokyo's attempt to change its character projecting a 'China threat' will undermine peace in the region.
China sees the change as the most significant shift in Japan's defence policy since it lost in World War II 60 years ago.
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Chinese Foreign Ministry spokesman Hong Lei said Japan should respect Asian neighbours' security concerns and not harm China's sovereignty and security interests.
For historical reasons, Japanese policy moves in military and security fields are closely watched by its Asian neighbours and the international community, Hong told a media briefing here.
The Japanese government has recently provoked disputes on historical issues and made unprecedented dramatic changes to its security policy, he said, referring to the raging dispute between the two nations over the resource-rich islands in the East China Sea.
"We urge the Japanese side to earnestly respect legitimate security concerns of its Asian neighbours, deal with relevant issues with discretion, not to harm the national sovereignty and security interests of China and not to undermine regional peace and stability, " he said.