The only real way that North Korea can successfully place a nuclear weapon on a American city, e.g. Honolulu, is if someone HIGH in the chain of command of the US military (similar to Cheney on 9/11) ALLOWS the incoming missile to actually hit a target, i.e. city. You should rightfully be concerned about the latter scenario, not Jong-un launching one. The USA possesses airborne lasers that can literally blast an inbound missile out of the air.