Sir Keir Starmer, as is often noted, is by profession a lawyer. It is only to be expected that he respects international law and upholds it where he can.
He is also, it hardly needs adding, a politician by trade, and a highly pragmatic one at that. Those are reasons enough to understand his change of heart and his decision to – partially – now back the attacks on Iran by Israel and the United States. He knows, rather better than his critics, the risks he runs as he attempts to navigate his way through one of the biggest international crises this century.