United people or geography?
Those arguements have raged for over 400 years and 12 years is a bit shy of a single generation.
It has been said that those that understand the solution (visa vis "the troubles") don't understand the question.
Them wot say it should heed the the adage "if you are not part of the solution you must be part of the problem"
getting communities to talk to each other would be a step on the road, but right now they are still shouting at each other - maybe more quietly but it ain't no whisper yet.