"China hopes that Japan take effective measures to stop stirring up tension in the East China Sea and making irresponsible remarks, " it said.

BBC: Asia

"Some countries took unilateral actions to impair China's sovereignty and maritime rights and interests, released groundless and irresponsible remarks with the attempt to expand and complicate the disputes, " said Foreign Ministry spokesman Hong Lei at a regular press briefing.

CNN: China blames Vietnam for rising tensions over disputed sea

He says Kanye West and some prominent black activists have been irresponsible in their remarks about the president and race.

NPR: President Bush, Katrina and African Americans

In its commentary, Xinhua criticised the remarks as "dangerously irresponsible" and said they would aggravate the conflict, reducing the chances of a political settlement.

BBC: Chemical weapons 'excuse for US to intervene in Syria'