"Sinn Fein are right out of the picture and would never attend Westminster"
A moot point in the circumstances.
Sinn Fein has climbed the ladder of respectability in Ireland and is now the third most powerful party, way above Labour after the number of own-goals they have scored and are still scoring (the Labour leader, Joan Burton is now heavily involved in trying to put water protesters behind bars)
People seem to be coming to terms with the fact that 'The Troubles' was a dirty war from which no sides emerged with clean hands.
Corbyn was doing or saying nothing that was not being said and done behind closed doors in Westminster and Whitehall - these things tend to generate severe bouts of selective memory.
Jim Carroll