It seems ever likely that the UK government propped up by the DUP seem intent on ensuring a hard border forms on our island. This will likely see the demise of the GFA and 20 years of hard fought peace.
In this eventuality, over a million Irish (&European) citizens will find themselves in a new cold house north of the border.
None of this will be the fault of the Irish State, however in the outcome of a ripped up GFA, should Ireland declare the North as sovereign territory once more? We gave up the claim to pursue a peaceful path to unification. Not to see the DUP and Tories pull a fast one and cement the North even closer to Britain by pulling out of the EU.