Kim Jong Un, the master of short, unannounced mystery trips, can taken the plunge and engage in a high-publicity, long-distance meting away from the Hermit Kingdom.

“It’s a long way to Tipperary, it’s a long way to go,” went the lyrics of the famous First World War tune. Well, it is a much longer way from Pyongyang to the Southeast Asian city state of Singapore than it was from the battlefields of France to the Irish countryside.

The proposed Singapore summit will be precedent setting in many ways. But it will also be unprecedented in representing the furthest travel afield