BEIJING (AFP) - China condemned the US Pacific air force commander on Monday for "irresponsible remarks" after he warned it would be provocative if Beijing declared an air defence zone over the South China Sea.
The response ratchets up a war of words also involving the Philippines and Japan over territorial disputes in the South and East China Seas respectively.
Beijing set up an "air defence identification zone" (ADIZ) over the latter waters in November that included contested islands claimed by it and Tokyo, prompting condemnation by Washington.
Amid concerns that Beijing may do the same to assert territorial claims in the South China Sea, US Pacific Air Force Commander Herbert Carlisle said on Sunday that such a step would be "very provocative".
At a regular press briefing on Monday, China's foreign ministry spokesman Hua Chunying hit back, saying that "setting up an air defence identification zone is a reasonable right for any sovereign state to exercise.
"Relevant officials should reflect carefully on what standing they have to make any irresponsible remarks about China's exercising its own reasonable and legitimate rights."
Pointing out that the US and other countries also have ADIZs, she asked, "Why can only China not (do the same)?"
"We hope that relevant countries and officials can stop making irresponsible comments," she said.
Beijing requires aircraft flying through its ADIZ to identify themselves and maintain communication with Chinese authorities, but the zone is not a claim of sovereignty.
Cmdr Carlisle also criticised recent actions by Manila and in particular Tokyo, saying that many countries needed to act to de-escalate tensions.
"Some of the things, in particular that have been done by Japan, they need to think hard about what is provocative to other nations," he said in an interview in Singapore with the US news agency Bloomberg.
Last week Philippine President Benigno Aquino compared China's efforts to seize disputed territories to Nazi Germany's actions before World War II, and urged world leaders not to repeat the mistake of appeasement - comments Chinese foreign ministry spokesman Hong Lei dismissed as "unreasonable".
Meanwhile China and Japan have slammed one another over disputed islands, as well as Beijing's grievances over Japan's history of imperial aggression until its defeat in 1945.
Tensions spiked even further after Japan's nationalistic Prime Minister Shinzo Abe in December visited the Yasukuni shrine, which commemorates Japan's war dead, including a handful of war criminals executed at the end of World War II.
In opinion pieces in January, both countries' ambassadors to the UK invoked the fictional evil wizard of the Harry Potter series, Voldemort, in accusing the other side of escalating the conflict.
On Friday Beijing had denounced a US official's call for China to clarify or adjust its claims in the South China Sea, calling the remarks "irresponsible".
Beijing claims the sea almost in its entirety, even areas a long way from its shoreline, but portions are also claimed by the Philippines, Vietnam, Malaysia, Brunei and Taiwan.