<span style="color: #222222;">North and South Korean troops exchanged fire along their tense border today, this is the first such incident since the rivals took unprecedented steps to lower front-line animosities in late 2018.</span><br />'' <br />'' <span style="color: #222222;">The Joint Chiefs of Staff in Seoul said that North Korean troops fired several bullets at a South Korean guard post inside the border zone. He said, South Korea responded with a total of 20 rounds of warning shots on two occasions before issuing a warning broadcast. The military said, South Korea suffered no casualties.</span><br />'' <span style="color: #222222;"> </span><br />'' <span style="color: #222222;">The exchange of fire came a day after North Korea broadcast video of its leader, Kim Jong Un, reappearing in public after a 20-day absence amid intense speculation about his health.</span><br />''  <br />