Four days after the terrorist atrocity at the Manchester Arena on 22 May 2017, which killed 22 people, Jeremy Corbyn made the bravest speech of his career.
The then Labour leader went much further than the pro forma condemnations of terrorist barbarity customary in the wake of such attacks.
He raised the forbidden subject of British foreign policy. Corbyn highlighted a connection between “wars our government has supported or fought in other countries and terrorism here at home”.
This intervention was all the more remarkable because he made it in the middle of a general election campaign. At first Conservative strategists could not believe their luck.