Country Neighbour Connect: Closest Capital, start with Less Isolated Capital City
Always choose the neighbour who is closest when distance is measured between capital cities, when left with no neighbors go back to the previous country and follow with second closest neighbor.
Start with Vatican City! note that you may type either the country or the capital
Overseas borders are considered: UK-Spain, Spain-Morocco, France-Netherlands, France-Brazil/Suriname
Dubious India-Sri Lanka and Qatar-UAE are not considered