The executive order comes as the US president tries to reduce America's reliance on imports of the vital materials.

The price of China-made smartphones, TVs and laptops could rise in the US and elsewhere, experts warn.

How much will the UK be hit by US tariffs and what happens next?

Economists say the president's import taxes could result in higher prices for a range of products in the US.

Investors are nervous about the possibility of a US recession, say experts.

The BBC's Analysis Editor Ros Atkins looks at why the US wants access to Ukraine's minerals.

President Trump has proposed a sweeping set of tariffs. Does this mark the end of the post-war free trade world?

The president will soon have to decide whether to match his trade rhetoric with action or shelve his tariff plans.