News that North Korea may have successfully miniaturized a nuclear warhead to fit on a intercontinental ballistic missile set off a flurry of threats from both President Trump and Kim Jong Un, as well as worries of war across the globe. Jane McMillan enlists expert David Schmerler for a realistic assesment of North Korea's nuclear advancements and the level of threat this presents. Mr. Schmerler is a Research Associate at the James Martin Center for Non-Proliferation at The Middlebury Institute for International Studies in Monterey, California.