U.S. Deputy Secretary of State John Negroponte, speaking in South Korea, called on Pyongyang to meet a 60-day deadline to shut down its main nuclear reactor.
Separately, Chinese Foreign Minister Li Zhaoxing called on all negotiators to meet their obligations, including the five countries that have offered aid to North Korea in exchange for its nuclear cooperation.
An EU delegation is also headed to Pyongyang today for high-level talks on implementing the agreement.
Meanwhile, the United States and North Korea today are set to continue talks on normalizing relations for the first time in more than 50 years.
The talks were scheduled as part of the six-country nuclear agreement.
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