No sign of movement of troops or weapons , general says . Though Kim died on Saturday , U.S. officials only learned of his death from North Korean television on Sunday night . US defense secretary speaks with South Korean counterpart . U.S. troops in North Korea not on special mission , general say . North Korea conducts nuclear test launch ; West not alarmed .
No sign of movement of troops or weapons , general says . US defense secretary speaks with South Korean counterpart . U.S. troops in North Korea not on special mission , general say . North Korea conducts nuclear test launch ; West not alarmed .