...president of the United States? Hillary Clinton
...chancellor of Germany? Angela Merkel
...president of France? Francois Hollande
...prime minister of the UK? Ed Miliband
...prime minister of Canada? David Cameron
...prime minister of Australia? Tony Abbott
Other than the bolded, the others look reasonable. Though 1) Isn't Merkel going to retire at some point? She's really going to be chancellor for 11+ years? 2) I don't know that Abbott will last that long, given how frequent party coups have become in recent years here in Oz. Maybe he'll get replaced by Joe Hockey or something by then.
Harper, not Cameron (doubt the Canadians would want British leftovers
) I think Merkel will accept one more term.
I really, really hope somebody will oust Abbott, but since he is the current Liberal leader he is the most realistic bid.