Varadkar is right about threat to peace in North

The DUP may never be able to re-engage with power-sharing as it sides with far-right Tories over Brexit. So is the Peace Process in trouble?

Is it back to the past then? It required Taoiseach Leo Varadkar to spell it out in Brussels last week. Beyond all the semantics and the endless arguments there is a bottom line, a terrible place where nobody wants to end up again. Thanks to partition, the North is a fundamentally unstable place: two cultures, jam-packed into a disputed territory.

The statistics are undeniable. In every decade since partition (except the first two ...