The acrimony provided an uneasy backdrop to U.S. President Barack Obama's arrival in Cambodia for a regional summit where he is expected to urge China and Southeast Asian nations to resolve the row, one of Asia's biggest security issues.
Japanese Prime Minister Yoshihiko Noda challenged efforts by summit host Cambodia, a staunch China ally, to limit discussions on the mineral-rich sea, where China's territorial claims overlap those of four Southeast Asian countries and of Taiwan.
"Prime Minister Noda raised the issue of the South China Sea, noting that this is of common concern for the international community, which would have direct impact on peace and stability of the Asia-Pacific," a Japanese government statement said after Noda met leaders from the 10-member Association of Southeast Asian Nations (ASEAN).
The Thais reinforced the notion that this isn't just a regional issue and that the "international community" (read that as "America") has an interest:
While the territorial row was a matter for the "parties concerned," maritime security and freedom of navigation were an international concern, said Sihasak Phuangketkeow, permanent secretary at Thailand's foreign ministry.
"If it comes to the broader issue of maritime security, meaning freedom of navigation, security of sea lanes, I think that is a concern of all countries," he told reporters.
That from another vital pivot point for our Asia-Pacific focus.
China used a soft-power charm offensive to make friends and influence people while they were weaker. Now that they are stronger, they are abandoning that tactic in favor of bullying and threats. But China is only getting more powerful rather than being powerful enough to get away with hard power threats.