Tony Blair is Yesterday's Man with blood on his hands.
The further away from the UK he goes, the brighter his reputation and the more people will pay to hear him spout his irrelevant nonsense, secure, as he is, that is opinions still matter to anyone outside his inner circle of admirers.
This is not to be expected, and I suspect that any politician high enough to have any meaningful effect on Brexit will be well aware of Mr Blair, and what he is, and more importantly, what he is not - someone of any influence whatsoever.