You may have heard the phrase ‘speaking truth to power’ a few times over the past month or two. The resigning UK Ambassador to the EU, Sir Ivan Rogers, warned colleagues to “speak truth to power” and “challenge muddled thinking” in an unprecedentedly blunt departing email in January. And over the pond, we have President Trump sacking those whose message he does not like to hear, accusing some of betrayal and blaming ‘fake news’ for stories that challenge his position and view.