North Korea: For a long time, North Korea’s nuclear threat was capped in the 10- to 15-kiloton range. But earlier this year, says Michael Elleman, senior fellow for missile defense at the International Institute for Strategic Studies and an analyst for 38 North, a North Korea-tracking site, “North Korea detonated a thermonuclear weapon with a yield ranging between 150 kilotons and 250 kilotons. The tested weapon very likely could be fit on the HS-15,” the ICBM the country tested in November, “which could reach most, if not all, of the U.S. mainland.”
