Reuters:

The United States is open to discussions with North Korea on a peace treaty even while six-country talks continue on dismantling Pyongyang’s nuclear programs, but the North Koreans must first come back to the negotiating table, US officials said yesterday.
Commenting on a report in The New York Times, two US officials said the concurrent efforts have been underway for months. They played down the Times report that the Bush administration was considering a new approach.