This time 30 years ago, nobody would have dreamt that Germany would be reunified just 20 months later. It was one of those great surprises of History in which, as is often the case, it is people mobilising who tip the balance, with politicians left to do no more than decide whether or not to seize an opportunity.
As everybody knows, the island of Ireland is divided in two. The smaller part of it belongs to the large neighbouring island. An ordinary person looking at a map would wonder what...