As the director of a new documentary exploring the extraordinary success of the former leader, Michael Waldman spent several months living on Planet Blair and talking to former colleagues – including Peter Mandelson. It was a fascinating – and sometimes unnerving – experience A t a time when Sir Keir Starmer’s political judgement is being questioned, some see the decade when Tony Blair was in power as a golden age of stability and prosperity – and astute political management. He appointed Peter