Unidentified Submarine Spotted Off Japan Email this Story Nov 9, 10:52 PM (ET) BY MARI YAMAGUCHI TOKYO (AP) - Japan's navy forces went on alert early Wednesday after a foreign submarine was briefly spotted in its territorial waters, the government's top spokesman said. The sub's country of origin and other details could not immediately be determined. A reconnaissance aircraft and destroyer were dispatched to investigate, Chief Cabinet Secretary Hiroyuki Hosoda said. The aircraft confirmed the submarine had entered Japanese territorial waters near the Sakishima islands in southern Okinawa prefecture but that it later left, he said. Defense chief Yoshinori Ono...