A road already traveled: after a Trump-Kim summit, the next steps the US and North Korea will probably take 

The prospects for a summit meeting next month between US President Donald Trump and North Korean leader Kim Jong-un might look a bit shaky, but if it does go off as scheduled, a larger issue remains: how best to build on it and end the decades of hostility between the two nations.
US analysts suggest that a road map already exists – the diplomatic path Washington and Beijing took to reach the normalisation of their relations.
That path starts with setting up liaison offices, not an…