Latin American leaders should celebrate their success in bringing an end to the spiralling crisis in the Andean region. But they should not get carried away by the results of Friday’s meeting of the Rio Group in Santo Domingo.

Differences between Colombia and Venezuela – and its allies Ecuador and Nicaragua – may have been patched over for now but there is every chance that tensions will re-emerge pretty soon. The reason? The accusation that the Colombian left-wing guerrillas of the Farc operate with the help of Venezuela and Ecuador has not been resolved and as an article in the Washington Post puts it, “is sure to fester”.