'Twas ever thus.

The world is understandably concerned at the prospect of war between the United States and North Korea.  But this ignores the fact that those two countries are already at war, and have been for nearly 70 years. What we refer to as the Korean War started in 1950 and has never been officially ended. There was an armistice in 1953, but that was it.  The parties are still theoretically at war.