North Korea: After successfully testing a missile capable of launching a satellite, Pyongyang works toward a nuclear warhead small enough for it to carry an electro-magnetic-pulse weapon of our worst nightmares. When North Korea orbited a failed satellite in December aboard an Unha-3 long-range missile, it was treated in some quarters as a stunt of no real significance or threat. The last Stalinist regime on earth had no deliverable warhead small enough to place on this missile which itself had no great accuracy. Serious observers, however, noted that any nation capable of putting an object in orbit could deliver an...