Some countries are fighting back with retaliatory tariffs, others are seeking exemptions and are trying to negotiate.

It comes after the Canadian province of Ontario said it would suspend a 25% surcharge on US-bound electricity.

The UAE’s exports of aluminium to the US jumped in the first 11 days of March, data from the US Department of Commerce showed, as buyers stocked up on shipments from their second-biggest supplier before the US tariffs took effect on Wednesday.