There is no agreement yet on the conditions for participating in such a bank, he said in Moscow.

WSJ: Brics May Offer Bank Stake to Non-Members

Yet there he was Sunday evening and Monday morning in Melbourne, matching Djokovic stroke for stroke, angle for angle, absurd winner for absurd winner.

WSJ: Wawrinka Shows Way to Beating Tennis's Big Four

But he insisted the market economy was the most successful system yet devised for improving living standards, and that there was a moral imperative to create wealth.

BBC: Ed Miliband warns of St Paul's protest 'danger signals'