Unionist commentator @AlexKane221b throws out united Ireland challenge #BBCNolan

With the referendum on Scottish independence just weeks away, what would happen if there were to be a border poll held here? That's what Alex Kane has been asking in his column. He has warned republicans to be careful what they wish for and not let their hearts rule their heads. And he's challenged them to spell out how a united Ireland could possibly work. Stephen hears from Alex Kane and gets the views of republican commentator Chris Donnelly