Tony Blair and Bill Clinton must be very happy about how they have fared since leaving political office, for each has since become enormously rich. Tony Blair may well be the richest British prime minister since the 14th Earl of Derby in the 19th century, and Bill Clinton is among the ten richest American presidents ever (richer even, it is said, than President Kennedy) — not bad for the child of a junior tax inspector in Edinburgh and for one from a poor and dysfunctional family in Hope, Arkansas.