US and European shares fall further as Trump tariffs prompt retaliation

BBC Summary

US and European stock markets fall after Donald Trump's 25% tariffs on imports from Canada and Mexico begin, as well as a new 10% levy against China.

China has vowed to fight the US "to the bitter end", announcing up to 15% tariffs on a range of American products, and Mexico says it will outline retaliatory action on Sunday, reports BBC.

Meanwhile, Canada has outlined 25% tariffs against billions of dollars of US goods, with Prime Minister Justin Trudeau due to speak shortly - watch live at the top of the page.

Analysts are warning the tariffs could push up prices for American households, writes our business reporter, and have a knock-on effect on consumers around the world.