Japan military on alert over North Korea's planned rocket launch

By Jack Kim and Nobuhiro Kubo SEOUL/TOKYO (Reuters) - Japan placed its military on alert on Wednesday to shoot down a North Korean rocket if it threatens Japan, while South Korea warned the North will pay a "severe price" if it proceeds with a satellite launch that Seoul considers a missile test. North Korea should immediately call off the planned launch, which is a violation of U.N. Security Council resolutions, the South's presidential Blue House said in a statement. Seoul's warning came after