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This is why the Irish border debate could be a defining moment for Brexit negotiations

A professor of European law explains why the Brexit border is not just an Irish problem

By Kenneth Armstrong  

An abandoned Customs Facilitation Office at the border between the Republic of Ireland and Northern Ireland near the village of Killeen. Photo: PA

Avoiding a so-called ‘hard border’ on the island of Ireland is an ambition that seems to be shared by all sides in the Brexit negotiations. But as the United Kingdom prepares to leave not just the EU but also its Single Market and Customs Union, the means of doing so has not been readily apparent.

With the border issue forming a key part of the first phase…

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