US Defense Secretary James Mattis said earlier the missile launched demonstrated North Korea had the ability to hit “everywhere in the world.”
https://www.cnn.com/2017/11/28/politics/north-korea-missile-launch/index.html
Not to mention high altitude EMP burst capabilities hitting continental USA (which could be as devastating as a nuke hit) as well as Scud/Nodong IRBM threat to 120 million Japanese and in their ranks 102,000 US citizens here on Japanese soil. This is no joke.
Later article, Mattis, “Not a capable threat.” https://www.reuters.com/article/us-northkorea-usa-pentagon/mattis-says-north-korean-icbm-not-yet-a-capable-threat-against-u-s-idUSKBN1E92QA