The negotiations, known as the six-party talks, began in 2003 and consist of five countries -- China, Japan, Russia, South Korea and the United States -- trying to convince North Korea to drop its atomic development in exchange for aid and incentives.
Pyongyang walked out of the talks in 2009, three years after carrying out its first nuclear test, and has subsequently detonated two more devices underground.
"There's very strong consensus among the five parties that in order for us to have any chance of success in nuclear negotiations we need a very strong commitment from the North Koreans that in fact they would be a serious negotiating partner if and when negotiations resume," Sung Kim told reporters in Beijing.
"And that's what we're waiting to see from the North Koreans," added Kim, Washington's special representative for North Korea policy.
Kim, a former US ambassador to South Korea who assumed his current post in early November, spoke at the conclusion of a trip that also included stops in Tokyo and Seoul.
In September 2005 Pyongyang agreed in writing to stop the programme. But as well as the nuclear test explosions it has also conducted ballistic missile launches, developments which led to a series of censures and sanctions by the UN Security Council.
Kim said that Pyongyang's release in October and November of three US citizens it had been holding was a welcome development, but it had not resulted in any visible change in the country's attitude toward the nuclear issue.
"Very generally speaking, it would be hard for us to negotiate with the North Koreans while they're continuing to carry out nuclear activities -- activities that are clearly banned not just by their own commitments in the six-party process but by a host of UN Security Council resolutions."
US director of National Intelligence James Clapper, who flew to North Korea on a secret mission to free two of the Americans in November, told The Wall Street Journal after the mission that he saw "the potential for change" in the isolated state.
You’ve reached your limit of {{free_limit}} free articles this month.
Subscribe now for unlimited access.
Already subscribed? Log in
Subscribe to read the full story →
Smart Quarterly
₹900
3 Months
₹300/Month
Smart Essential
₹2,700
1 Year
₹225/Month
Super Saver
₹3,900
2 Years
₹162/Month
Renews automatically, cancel anytime
Here’s what’s included in our digital subscription plans
Exclusive premium stories online
Over 30 premium stories daily, handpicked by our editors


Complimentary Access to The New York Times
News, Games, Cooking, Audio, Wirecutter & The Athletic
Business Standard Epaper
Digital replica of our daily newspaper — with options to read, save, and share


Curated Newsletters
Insights on markets, finance, politics, tech, and more delivered to your inbox
Market Analysis & Investment Insights
In-depth market analysis & insights with access to The Smart Investor


Archives
Repository of articles and publications dating back to 1997
Ad-free Reading
Uninterrupted reading experience with no advertisements


Seamless Access Across All Devices
Access Business Standard across devices — mobile, tablet, or PC, via web or app
