What is the flight time for a missile that can carry a nuke from NK to the US?
http://nationalinterest.org/feature/north-koreas-nuclear-tipped-icbms-can-now-hit-new-york-21705
http://www.businessinsider.com/north-korean-nuclear-strike-united-states-arrival-times-2017-8
40 minutes to hit NYC, 38 minutes to hit LA. according to this article.