US President Trump condemns the North as a "rogue nation" endangers the US and embarrasses China.
Private trade and smuggling continue, though, with some traders using boats to move their goods.
The North has ignored sanctions, warnings and appeals to come to the negotiating table.
The workers report losing a fifth of their monthly wages with the new currency.
The isolated country routinely employs the tactic whenever sanctions are imposed.
Working in collusion with police, they demand money for permission to load trucks and transport goods.
The order to 'stand by' is delivered to factories and firms in one province by military helicopters, sources say.
They are fishing for squid to sell abroad and in domestic markets for Chinese renminbi and US dollars.
Foreign ministers of Philippines and North Korea also meet on sidelines of ASEAN Regional Forum.
At meeting in Manila, Southeast Asia’s top diplomats express “grave concerns” about escalating tensions on Korean Peninsula.
Some fail to return to their posts as newer staff are sent out, leaving a number of positions unfilled.
American embassy asks ASEAN Regional Forum members to use meeting to highlight Pyongyang’s “unacceptable” behavior.
They must watch what they say when traveling in China, North Korean officials tell them.
North Korea in coming days will take part in a regional meeting hosted by Manila.
Court sets Oct. 2 for trial of Indonesian and Vietnamese defendants.
Security officials use the new order to pressure families to lure defectors home.
All factory and firm employees must have cards by August to receive their salaries.
Authorities are now selecting people only from Pyongyang who have children living in the country to reduce the number of defections.
The leader referenced film taken of markets as an impetus for policy change.
Some welcome the country's advance in military reach, while others voice anxiety over possible defeat in war.
A technological leap by Pyongyang undermines a US bid to rein in its weapons program.
Andrei Lankov says North Korea presents no good options for Washington, Seoul, Tokyo or Beijing.
Many leave early for 'medical' reasons while conscripts from less influential families must serve for years, often in farming or construction.
At least 140 North Koreans who worked in Sarawak state have been deported.
High school and older students now irrigate crops for hours each morning before school begins.
Former negotiator with North Korea says gestures to Pyongyang to 'improve the atmosphere' could cause the U.S. and its allies to lose sight of their goal.
Chinese and South Koreans fed up with Pyongyang’s foreign policy are eating elsewhere.
Activists say Otto Warmbier case underscores the urgency and depth of North Korea's rights problems.
The high-level managers of foreign currency-generating enterprises are selling the illegal products to officers in the Korean Workers’ Party.
Defense attorney expresses disappointment that CCTV video of crime was not included.