Forget Seattle. Forget San Francisco. Forget Denver. The west may be safe by virtue of its own relative lack of importance. If the Norks really have a missile that can hit Washington D.C., we're way past the point of guessing as to the limits of their capabilities. It's now just a question of whether we do something definitive to stop them before they decide to go ahead and strike.
But can they? Er, possibly, although the need to carry a nuclear warhead complicates the matter because it adds weight to the flight. But based on the successful trajectory of a launch from about a week ago, the Norks and a lot of other people seem to think they can do it by leaving the Earth's atmosphere and returning at just the right point:
The missile was fired just before 3 a.m. Wednesday local time from a site about 20 miles north of the North Korean capital, Pyongyang, according to U.S., Japanese and South Korean authorities. It flew for almost an hour, covering about 620 miles, before splashing down in the waters between Japan and the Korean Peninsula inside Japan’s exclusive economic zone, which extends 200 nautical miles from its coast.