It’s a scorching weekend across western Europe. To cope with the heat, our Charlemagne column has some advice: don’t feel guilty about lowering the thermostat. As the world warms and Europe increasingly turns to cheaper, cleaner energy, the continent needs to rethink its attitudes towards air-conditioners.

Elsewhere, a peace agreement between America and Iran has given relief to oil markets. But the volatility is far from over. Even if the deal holds, it will take time for tankers to return and production to ramp up, particularly as the Strait of Hormuz is still littered with mines.