Exactly, and also exactly the capability that Blair does not have.
As for "knows what its like to have blood on his hands", Blair has gained about as much knowledge of that as I have from playing RTS war games. He has ordered men to their deaths, but has he ever taken the time to look honestly and unflinchingly at what he wrought? You and I might agree that Blair has blood on his hands - I very much doubt that he does. And rest assured, he firmly believes he is right.
An ability to lie is definitely a negative trait if it is used to extensively lie to oneself.
And it's a pattern. While Saint Tony has been the Extra Secret Super Special Hot Sauce Quartet Envoy to the Middle East, the Gaza situation has devolved into naked barbarism and atrocity, and Israel is - still - seriously considering an attack on Iran.
Does Europe want someone so likely to destroy the EU?