A South Korean government official checks the hotline to talk with North Korea in the border village of Panmunjom on January 3, 2018. Photo: South Korean Unification Ministry/Getty Images The mixed signals North Korean dictator Kim Jong-un sent in his New Year’s Day address have sparked dramatic developments over the past 48 hours. First, President Trump responded to Kim’s latest provocation — “The entire United States is within range of our nuclear weapons, a nuclear button is always on my desk” — with an appalling threat of his own. Then, after most Americans headed to bed on Tuesday, with many wondering if the president might drag us into war via tweet, we learned of a major shift in relations between the two Koreas. In his New Year’s speech, Kim extended a rare olive branch to the South, saying they should begin talks “as soon as possible” and “work together as a people of the same heritage to find peace and stability.” At 3 p.m. local time on Wednesday, Kim made good on that pledge, ordering the reopening of a hotline with the South that’s been dormant for almost two years. “We have received orders to reopen the Panmunjom phone line…