North Korea is threatening to start a nuclear war. The rest of the world seems to be dismissing this threat, claiming it's being done for domestic political reasons. It's true that North Korea has in the past made what have turned out to be false threats, and the North Korean leadership would almost certainly be made much worse off if they started an all out war.

But imagine that North Korea does launch a first strike nuclear attack, and later investigations reveal that the North Korean leadership truly believed that it was about to be attacked and so made the threats in an attempt to get the U.S. to take a less aggressive posture. Wouldn't future historians (perhaps suffering from hindsight bias) judge us to be idiots for ignoring clear and repeated threats from a nuclear-armed government that appeared crazy (map doesn't match territory) and obsessed with war.