Japan warning 'has domestic cause'

Ruling party's declining support forces gov't to divert discontent

Domestic political uncertainty in Japan caused the country's foreign minister to threaten on Sunday that "action" would be taken against China over Chinese exploration of the Chunxiao oil and gas fields in the East China Sea, Chinese experts said.

Katsuya Okada said during a meeting with his Chinese counterpart Yang Jiechi on Sunday in Tokyo that if China violates an agreement signed in 2008 governing the development of oil and gas field in East China Sea, "Japan will have to take certain action", the AFP reported.