A possible thaw on the Korean peninsula.
New Mexico Governor Bill Richardson won an agreement from North Korea allowing U.N. nuclear inspectors to return.
Travelling to Pyongyang, Richardson hopes to gain ground on his proposal for a military commission involving the U.S. and both Koreas.
Meanwhile, Beijing renewed its call for talks to ease tensions on the Korean peninsula after South Korea held live-firing drills near its disputed maritime border with the northern country.
Speaking to reporters, the Chinese Vice Foreign Minister emphasised China's commitment to avoiding a conflict.
The U.S. and its regional allies are calling on Beijing to do more to rein in Pyongyang, for which it has long been an ally.