Azerbaijan held a day of mourning on Thursday for the dozens of victims of an airliner crash in Kazakhstan, as questions were being asked over the cause of the disaster.

Taiwan's Presidential Office conducted its first ever tabletop exercise simulating a military escalation with China, several officials briefed on the matter said, at a time when the island is facing renewed Chinese military threats.

National flags were lowered across Azerbaijan, traffic across the country stopped at noon, and signals were sounded from ships and trains as the country observed a nationwide moment of silence.

Japan Airlines said it was hit by a cyberattack on Boxing Day, causing flight delays and disruption—here’s what we know so far.

The airline also temporarily stopped selling tickets for flights departing Thursday, but said that there was no impact on flight safety.

Japan Airlines has been hit by a cyberattack that caused delays to more than 20 domestic flights, but it managed to restore its systems within hours