One of the many consequences of Brexit is the creation of a customs border in the Irish Sea, a move that for some in Northern Ireland has awakened old unionist fears of separation from the mainland. There's also been a lot of talk about the Northern Ireland Protocol stirring up dormant tensions between unionists and republicans. But what if those fears are ill-founded? Writer and journalist Susan McKay is the author of "Northern Protestants on Shifting Ground". She gives us her Perspective.
