What unity means
Sir - Maybe it's time we re-defined what we mean by Irish unity.
Three decades of horrific bloodshed failed to change the map of Ireland. When the Republican and Loyalist ceasefires were declared, the border was exactly where it was on the day that the first person was killed in the conflict.
But the border scarcely matters any more in today's world of free movement, except as a reminder that there are two jurisdictions on the island. People pass back and forth with ease between North and South, even if different flags fly on either side.