North Korea tests new 'tactical' weapon, releases U.S. prisoner

Kim Jong Un's visit to the test site of what North Korea's state media called a "tactical weapon" that could protect North Korea like a "steel wall" threatened to sour the diplomatic atmosphere at a time when negotiations between North Korea and the United States appear to have stalled."We remain confident that the promises made by President Trump and Chairman Kim will be fulfilled," a spokesman for theU.S. State Department said.