The world faces potential dangers as Japan and the US bolster their defense ties and ramp up their capability to intervene in global hot spots, according to military observers at a security conference in Beijing.

They also said that Japan, urged on by the United States, is worsening regional tensions by strengthening its military presence in the South China Sea.

Speaking at the Second International Conference on China-Japan South Korea Security Cooperation, which opened on Monday in Beijing, Jiang Xinfeng, an expert on Japanese studies at the People's Liberation Army Academy of Military Science, cited an increasing possibility that Japan will become more involved with the US in regional and global disputes.