They are also asked not to use emails to contact the authorities back home.
Three children perish from the highly contagious disease as authorities keep a tight lid on the outbreak.
But bringing the phones home and registering them requires costly bribes.
The new rules will also help authorities keep track of foreign visitors to the country.
Their handler had made them work as prostitutes.
Bus trips are up to three times as fast, sources say.
A Korea expert speaks about the consequences of a fourth North Korean nuclear test.
The shells land in southern waters and nearly hit the vessel.
Authorities prohibit travel and limit market hours during a mass mobilization for spring planting.
North Korean state media says construction was not done properly in rare admission of culpability.
They bribe their managers to allow them to pursue more lucrative options.
More than 20 workers have died at the Baekdusan Songun Youth Power Station since late March, sources say.
Mobile users evade surveillance by using fake names, sources say.
The hermit kingdom looks to expand its scope beyond China.
They say they can access the Internet via wireless networks in the capital.
But the schools are no longer a guaranteed route to elite universities, sources say.
A new study examines the nuclear-armed nation's illicit activities that earn valuable hard currency.
Sources say the strict enforcement targets foreigners and the wealthy.
After working under Jang Song Thaek, they are reassigned to insignificant positions.
The shelling comes amid ongoing joint South Korea-US drills in the region.
Students are 'disgruntled' by the instructions, a source says.
North Koreans shell out hundreds of yuan for China-smuggled cloth for ‘hanbok’ dresses.
Authorities and shipping companies must be more vigilant in enforcing sanctions, it says.
Authorities have arrested guards along the route the 'spy' allegedly traveled, a source says.
They use the smuggled radios to access foreign news and cultural programming.
Some voice concerns over the fairness of the exams and potential problems for traveling to exam sites.
A voluminous U.N. inquiry report finds massive rights abuses in North Korea.
The move is part of a relentless crackdown on allies of Jang Song Thaek.
A new system will require households to sell skins from their slaughtered animals to the authorities, sources say.
The changes dampen military exercises and delay cadre replacements in the ruling party.