The arrogance of this move is striking. Labour spent the best part of three years backing Israel to the hilt, both militarily and politically, as it inflicted genocide on Gaza, only latterly expressing reservations after coming under increasing domestic and international pressure. Now it presumes the right to lecture the Greens about standards of morality and political hygiene, as if it has any claim to the moral high ground.

This also risks backfiring on Prime Minister Andy Burnham personally, given his attempts to put clear daylight between himself and his predecessor, Keir Starmer, on Palestine - for example, by offering an apology for Labour’s handling of Gaza, and imposing limited (and “symbolic”, according to UK diplomats themselves) sanctions on illegal settlements in the occupied West Bank.