Northern Ireland: Powell minute to MT ("Anglo-Irish Relations: Northern Ireland") [following visit to Dublin David Crouch MP conveying "general feeling of frustration and despair" on part of Irish leaders; CDP reply - "it seemed to us that the Irish had dug a hole for themselves by building up quite unrealistic expectations before the Summit; and that despite all their protestations they were still trying to get joint authority in one form or another"] [declassified 2014]