SEOUL, South Korea — North Korea's military warned South Korea and the United States on Friday of "unprecedented nuclear strikes" over a report the two countries plan to prepare for possible instability in the totalitarian country.

The North routinely issues such warnings and officials in Seoul and Washington react calmly. Diplomats in South Korea and the U.S. instead have repeatedly called on Pyongyang to return to international negotiations aimed at ending its nuclear programs.
The Associated Press: NKorea vows 'nuclear strikes' in latest threat