What are Trump's 'reciprocal tariffs'?

 Trump said a minimum 10% tariff would apply to all imports to the US from 5 April.

The UK, Argentina, Australia, Brazil and Saudi Arabia are among the countries this applies to.

However, many nations will face much higher tariffs, starting on 9 April.

These tariffs include 49% on Cambodian products, 46% on Vietnamese imports and an extra 34% on those from China (in addition to 20% tariffs previously announced). Goods from the EU will be taxed at 20%.

White House officials described the higher tariffs - on countries Trump called the "worst offenders" - as "reciprocal".

Reciprocal would mean they were based on what countries already charge the US in the form of existing tariffs, plus non-tariff barriers such as regulations.

However, this is not what has happened for all of the countries on the list.

Instead the tariff rate was calculated on the basis that it would eliminate the US's goods trade deficit with each country.

The 2 April tariffs are not the first which Trump has announced.

He had previously introduced a 10% tariff on Chinese goods, which was later doubled to 20%.

He also announced 25% tariffs on goods from Mexico and Canada, and a 10% tariff on Canadian energy imports, before announcing some exemptions and delays.

He has also introduced a 25% tariff on all steel and aluminium imports, and a 25% tariff on all foreign-made cars - with a 25% tariff on car parts due to come in at a later date.