China expressed "strong concerns" and lodged an unusual protest with Japan over its patrol vessels remaining in international waters in the Taiwan Strait in early September to avoid a typhoon, a source knowledgeable about the matter said Monday.China told Japan that the coast guard patrol vessels "threatened China's security," the source said, adding it is believed to be the first protest of its kind from Beijing.Japan, however, did not accept the protest, the source said, pointing out the patrol vessels, which followed Chinese ships from near the Senkaku Islands, were in high seas where fr…READ FULL ARTICLE