Just so, Frank.  Pollak is basically claiming reunification will take a long time because nationalists are not thinking about it seriously when what he's really saying is the nationalists are not thinking about the unionists' version of reunification seriously.  And there is no way to take the unionists' version of reunification seriously since it includes minority rule and UK interference with internal affairs.  It's rather like saying the Western Allies were not thinking seriously about German reunification in 1945 because they didn't accept the Soviet version of German reunification.  And yes it took 45 years and the end of Soviet subsidies and the Soviet Union itself, but the way the Tories are going, it should take considerably less time for the UK to be in that position.