"Are we really willing to risk Los Angeles or Chicago in retaliation for an attack on a US military base in the region? Probably not," nuclear strategy specialist Vipin Narang tells the AP. And that's exactly the calculation that gives North Korea a small shot at "winning" in a nuclear conflict, challenging the assumption that launching a nuclear weapon would be automatic suicide for the country. If North Korea feels threatened to the point of using a nuclear weapon, a first target would likely be a US military base in Japan; North Korea would then use its long-range nukes to threaten the US mainland and avoid a retaliatory strike. Experts say this is Kim Jong Un's "theory of victory"—one that President Trump may be attempting to combat with an unsuccessful version of the "madman strategy." Here's what else you need to know about North Korea's most-recent missile launch: