Brexit has resurrected the united Ireland question

The oldest debate in Irish politics is back in vogue - and unification might just offer the right solution for people on both sides of the border

It will require the historians of the future to discover the extent of the political earthquake created by Brexit. In the North, in particular, the movement of the political plates shows no sign of stopping, even now, almost two years on from the referendum vote.

The latest manifestation is perhaps the most extraordinary of all. It seems that there is a back-channel conversation ongoing between significant figures in the ranks of moderate unionism ...