I've heard the term "hardliners" on the lips of BBC reporters over the past couple of days or so. It has been applied to two groups of people: those Iranians who are dead against Mrs Zaghari-Ratcliffe and those Brexiteers who want 'a hard Brexit'. Frank Gardner is one example of a BBC reporter who has been using the term about those Iranians, and Mark Urban is one example of a BBC reporter who has been using the term about those Brexiteers. Oddly, I've never considered either of those to be particularly hardline BBC reporters themselves.