Compared to the rhetoric of the mid to late twentieth century, the possibility of a nuclear attack on an American city gets little attention outside of occasional new threats:
Calculating the range of the missile in the direction of some major US cities gives the approximate results in Table 1.
Table 1 shows that Los Angeles, Denver, and Chicago appear to be well within range of this missile, and that Boston and New York may be just within range. Washington, D.C. may be just out of range.
Relations between the two countries are not good at this point. Yet, is anyone in a major American city or metropolitan region really worried about this? Cities are full of a lot of younger residents (people who didn’t live through the earlier nuclear threat), history suggests no country would use a weapon on a major metropolitan area (except the United States in 1945), Americans are pretty confident in their military abilities (even if they haven’t had to actually use their nuclear capabilities or defenses recently), and cities have plenty of other concerns to consider (from inequality to affordable housing to congestion).
I suppose one could argue that we have become too comfortable in light of an ongoing existential threat (and there are plenty of nuclear weapons beyond what North Korea might have and the discussions about dirty bombs are not too old). However, perhaps this suggests we have come a long way since the 1950s as few American urban dwellers or suburbanites will lose much sleep over this.