N. Korea blocked radio signals 2 days before missile launch: report (Kyodo) _ North Korea had blocked part of military radio and changed electronic signals two days before it test-fired the Taepodong-2 long-range missile, leading Japan and the United States to raise alert level early, the Sankei Shimbun reported Saturday in its online edition. On Tuesday, a day before the launch, North Korea also cordoned off a triangular area in the Sea of Japan, a move Japan and the United States took as signs of an imminent missile firing, the report said. Citing several intelligence sources in Japan and the...