On Monday morning, North Korea launched four missiles from the northwest corner of the country that traveled 620 miles before landing in the Sea of Japan.
While none of the launches were the long-awaited test of an intercontinental-range ballistic missile — the sort of weapon that could reach the United States — the salvo was a big deal in its own way. Pyongyang very vividly demonstrated the warnings from Thae Yong-ho, a high-ranking North Korean diplomat who defected last year and described how the country was taking the final steps to arm its missile units with nuclear weapons. North Korea is developing an offensive doctrine for the large-scale use of nuclear weapons in the early stages of a conflict. When combined with what we know about U.S. and South Korean war plans, this fact raises troubling questions about whether a crisis on the Korean peninsula might erupt into nuclear war before President Donald Trump has time to tweet about it.