China denies Japanese claims that Chinese naval vessels locked their radar onto a Japanese destroyer and helicopter. It accuses Japan of fabricating reports to smear China.
But State Department spokeswoman Victoria Nuland said Monday that the U.S. was briefed by Japan, and quote, "we have satisfied ourselves that it does appear to have happened."
China and Japan are embroiled in a territorial spat over a cluster of tiny islands called Senkaku in Japanese and Diaoyu in Chinese. Washington says it takes no stance in the sovereignty dispute, but opposes "unilateral actions" undermining Japan's administration of the islands.