June 25 marks the 70th anniversary of the Korean War's start. South Korean President Moon Jae-in had hoped peace efforts over the past two years would have brought the two Koreas closer, perhaps enough to produce a treaty formally ending the war. But talks are stalled, and North Korea has returned to harsh criticism and threats against its neighbor. Special correspondent Bruce Harrison reports. PBS NewsHour is supported by - https://www.pbs.org/newshour/about/funders