The sense of unease in the Japanese government over a thaw between North and South Korea heightened Tuesday with Seoul's announcement that the two Koreas will hold a leaders' summit at the end of next month.The fear in Tokyo is now that the United States, the shared defense ally of Japan and South Korea, will agree to dialogue with the North without preconditions -- something a Japanese Foreign Ministry source said would leave Japan "out of the loop."Japan has been trying to write the script for the international community to "maximize pressure" on North Korea, insisting that no dialogue sh…READ FULL ARTICLE