The announcement suggests that the country is preparing to do something to provoke the United States if Washington doesn't back down and make concessions by the end of the year.
An isolated conference centre on the outskirts of Stockholm was the setting on Saturday for the US and North Korea to resume nuclear talks.
North Korea have fired a series of projectiles from an area known to be used as a military base, South Koreas military have said.
Officials from North and South Korea hold further talks over Pyongyang's plan to participate in next month's Winter Olympics.
Choi Han Chan, 59, is charged with brokering the sale of ballistic missile components and coal in order to boost the sanctioned North Korean regime's struggling economy.