Today, President Trump promised North Korea a "fire and fury like the world has never seen" if it continues to threaten the United States. His remark came on the heels of a news article that cited an intelligence assessment claiming Pyongyang had successfully miniaturized a nuclear warhead. Miniaturization is a critical step toward being able to mount such a device onto a missile -- so, if the report is true, it's certainly worthy of due concern by those charged with our national defense.