With Labour’s NEC allowing Andy Burnham to run for selection for the Makerfield by-election and Wes Streeting confirming at the weekend’s Progress conference that he will stand in any potential Labour leadership contest, Keir Starmer is soon to be replaced at the top of the party. But one man’s shadow continues to loom over the top echelons of the party: war criminal Tony Blair. One of Wes Streeting’s first jobs was a one-year stint at Progress,…