Why wasn’t Philip May with his wife, Theresa, on the plane to the G20 summit in Buenos Aires today, when she needed him the most? Just about every other world leader travelling to what is being billed as the most critical summit for years had their other halves in tow when they stepped down onto the tarmac at Ezeiza International Airport.

And what a sizzling show they made. As always, the tiny French president, Emmanuel Marcon,