No Irish nationalist could support any treaty which institutionalizes British government claims to a part of Irish national territory. Indeed, the term - 'constitutional nationalism'- used by Mr.Mallon (SDLP) and his colleagues to describe their political philosophy is a contradiction in terms. The only constitutional nationalist in Ireland today is Sean McBride. He puts his nationalism within a framework of Irish constitutionality. Mr. Mallon, however, puts his within the framework of British constitutionality. Irish nationalism within British constitutionality is a contradiction in terms.