North Korea prepping missile launch, perhaps ICBM, South says

South Korea's Defense Ministry said Monday that North Korea appeared to be planning a future missile launch, possibly of an ICBM, to show off its claimed ability to target the United States with nuclear weapons, though it was unclear when it might happen.The South also fired missiles into the sea Monday to simulate an attack on the North's main nuclear test site, a day after Pyongyang detonated its largest nuclear test explosion to date.In addition, Seoul said Monday it would temporarily deploy