The move comes as tensions ease in Sudan amid improving relations with neighbouring South Sudan.

BBC: Sudan's Bashir orders political prisoner release

But Costa Rica's generosity has not done much to improve its uneasy relations with neighbouring Nicaragua.

ECONOMIST: Central American migrants

Ms Harman echoed an argument that others have made against the resolution: that Turkey itself is tiptoeing towards normal relations with neighbouring Armenia.

ECONOMIST: Strained relations between Turkey and America

Denmark's Europe Minister Nicolai Wammen, representing the Council of Ministers, said there was "strong public support" for Montenegro's EU prospects, and that it had good relations with its neighbouring countries.

BBC: Montenegro EU membership report