RTE have just finished showing the programme which Brian Walker mentioned on Sunday suggesting what might have happened had Jack Lynch ordered troops from the RoI to invade Northern Ireland in 1969. The programme is not yet on line. In essence it suggested the Irish troops would have been massacred. This suggestion has stimulated hearted debate on Balrog, Politics.ie and elsewhere. The most sensible comment, however, seems to have come from World by Storm on Cedar Lounge: There was never an invasion policy, instead there were plans which in themselves demonstrated that an invasion was an impossibility. That has not stopped the assorted armchair generals who of course do not have to worry about the blood letting their fantasies would have caused.