Japan needs to slow its roll a bit as China has the world's second largest Navy and they are still using our Navy for their defense. This aint 1942. Sino-Japanese relations deteriorated sharply this month after Japan bought the East China Sea islands, called Senkaku in Japan and Diaoyu in China, from their private owner, sparking anti-Japan protests across China. "China will never tolerate any bilateral actions by Japan that harm Chinese territorial sovereignty," Vice Foreign Minister Zhang Zhijun said on Tuesday. "Japan must banish illusions, undertake searching reflection and use concrete actions to amend its errors, returning to the consensus and understandings reached between our two countries' leaders." The risks of military confrontation are scant, but political tensions between Asia's two biggest economies could fester. For the Chinese navy, the addition of carriers has been a priority as it builds a force capable of deploying far from the Chinese mainland. China this month warned the United States, with President Barack Obama's "pivot" to Asia, not to get involved in separate territorial disputes in the South China Sea between China and U.S. allies such as the Philippines.