Beijing warns Tokyo not to destabilize region (2)

"Japan's illegal island 'purchase' violated China's territorial sovereignty and resulted in the current difficulties in Sino-Japanese relations," Hua said at a regular news conference.

"China's actions in safeguarding its territorial sovereignty are rightful and necessary," she added.

In recent years, Japan has been enhancing military capabilities and alliances and sowing discord in regional security issues, all of which have drawn the attention of regional countries and the international community, Hua said.

Analysts warned of signs of a rightward shift in Japanese politics that will threaten regional peace and stability.

The LDP unveiled on Wednesday a series of policy priorities, including pledges to look at establishing a permanent presence on the islands, which are at the center of a row with China.

It also promised a review of the self-imposed ban on defending allies and raised the possibility of Japanese troops returning fire if US forces come under attack.

Polls suggest that the LDP is likely to become the biggest party in the election scheduled for Dec 16. Japanese Prime Minister Yoshihiko Noda dissolved parliament and called for a general election next month.