The country became the first to deny access to Elon Musk's chatbot, after governments and regulators from Europe to Asia have condemned sexualised ‍content on the app.

The Air Force said preliminary investigations found the officers were directly involved in immoral activity, following viral videos of "yeye" vice culture in military camps. 

About 50 sanitation workers were buried when refuse toppled onto them on Thursday (Jan 8).

In 2017, Beijing mandated that dozens of northern areas wind down the use of coal-fired stoves in favour of electric and natural gas-powered systems, but subsidies to refit stoves have faded.

South Korea said it had no record of the drone's flight, and that it was "not a model operated by our military".