Authorities are watching citizens for signs of prohibited money and movies from the South.
The domestic propaganda campaign includes phrasing that indicates Pyongyang will not give up its nuclear capabilities.
Meanwhile, most North Koreans are unaware the talks were even cancelled.
Gone With The Wind, with its themes of civil war and hardship, is a particular favorite, one source says.
Few believe summit meetings with rival South Korea and the US will improve their lives, sources say.
The warning comes after the North calls off talks with South Korea over US-South joint exercises.
An unknown number are killed or injured when a blaze blamed on faulty wiring sweeps through a workers' barracks.
US Secretary of State Mike Pompeo secures their freedom during an unannounced trip to the North.
High-rise apartments are being offered in Sinuiju city for purchase and investment opportunities, sources say.
A former North Korean diplomat discusses why Kim won’t agree to an irreversible denuclearization.
The coupons, issued to the country's elite, are then sold to ordinary citizens at twelve times their real value.
Pyongyang tells its trade workers to arrange investments, look for openings as tensions ease.