denuclearisation of Korean Peninsula

A year ago the situation in the Korean Peninsula appeared to be sliding rapidly towards war, with North Korea pressing ahead with its ballistic missile and nuclear tests, with Donald Trump, the US’s newly elected and highly inexperienced President tweeting threats of military action, with General H.R. McMaster, Donald Trump’s hawkish National Security Adviser lobbying for military action, and US fleets moving backwards and forwards towards the Korean Peninsula alongside wild talk that they might be about to be used in action.
A year later the mood is transformed.