Sony hack: North Korea threatens US as row deepens

Only very rarely do CEOs and corporate officials comment on political developments.

But sometimes a company gets dragged into the messy world of politics against its will - and in full view.

That's pretty much what's happened to Sony Pictures with its film The Interview - a movie which pokes fun at the North Korean leadership.

Sony was hacked ahead of the film's release - and under the threat of further hacking, last week it said it was scrapping The Interview's cinematic release in America.

US officials and Sony say the hack was a North Korean cyberattack.

Pyongyang is furious - today it threatened to, in its words, " use all types of warfare" against the US in retaliation.

But where does all this controversy leave Sony?

A question for Ken Cukier of The Economist - he's the newspaper's former Tokyo correspondent and author of the book, "Big Data".