Biarritz — Standing next to US President Donald Trump, at the end of three days of high-stakes diplomacy, French President Emmanuel Macron was finally ready to make his final move and end his G7 summit in Biarritz in spectacular style.

In secrecy, his exhausted advisers had worked the back channels to Iranian President Hassan Rouhani as their boss took the US leader into his confidence and got his buy-in for a tentative mandate to take the lead on the Iran crisis...

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