Washington and Pyongyang may be moving toward a formula for ending North Korea's nuclear weapons program. A second round of talks involving the U.S., China, Japan, Russia, and North and South Korea is expected to take place in Beijing in mid-December. The first round in August ended in rancor, but Pyongyang and Washington now appear more flexible. Pyongyang says it may drop its demand for a nonaggression treaty with the U.S. The Bush Administration, while rejecting a treaty, has indicated it could provide North Korea a written security guarantee in return for the "verifiable and irreversible" end to its nuke program. The talks will still be tough, since neither side wants to move first.