Gregory Campbell has been accused of being   “crass and offensive” by Sinn  Féin after comments he made in a Facebook post. File  photograph: Eric Luke

The East Derry DUP MP Gregory Campbell has been criticised by Sinn Féin for a revisiting of his “curried yoghurt” comments about the Irish language. (...)

Prof Ludwig Mühlhausen was a professor of Celtic studies at Berlin University and a Nazi spy. Photograph: BBC

It could be a story from a spy novel: the German scholar who claimed to be learning Irish in Donegal but who was instead an “enthusiastic” Nazi secret(...)