North Korea can't hit America, but South Korea and Japan in range

SEOUL (Reuters) - North Korea has plenty of military firepower even if its threat this week of a pre-emptive nuclear strike on the United States is a hollow one, with South Korea most at risk from the isolated regime's artillery and rockets.

Japan, separated by less than 1,000 km (625 miles) of water and a frequent target of North Korea's ire, is also in easy range of Pyongyang's short- and mid-range missiles.