What have ex-presidents Bill Clinton and George W Bush got in common? Apart from making a joint appearance tonight in Toronto, they’ve both apparently made their peace with Barack Obama.

But Bill still bears a grudge against the Kennedys and Bill Richardson for their primary endorsements, says Sunday’s piece in the New York Times.

And Dubya has broadly backed up Dick Cheney on interrogation, while being careful not to criticise his successor in the White House.

UPDATE Here’s the Washington Times report on what seems to have been a pretty friendly encounter, inside the hall at least.