SEOUL, South Korea (AP) -- A top U.S. diplomat says it's not clear if North Korea actually wants to rebuild its nuclear facility, or if it's just posturing.
The comments follow South Korea's confirmation that North Korea is working to restore its nuclear facilities after suspending operations to disable them last week.
South Korea says it's working with the U.S. and other members of a six-party group involved in nuclear negotiations with the North to determine how to respond to the move.
North Korea claims the U.S. isn't living up to its end of a disarmament deal because it hasn't removed the North from the U.S. list of state sponsors of terrorism.
The U.S. claims North Korea has to agree to a plan to verify an accounting of nuclear programs submitted in June in order to be taken off the list.
(Copyright 2008 by The Associated Press. All Rights Reserved.)