Live: Nerves on markets as Trump trade war with Mexico, Canada, China begins

Donald Trump’s trade war against the US’s largest trading partners escalated on Tuesday as huge US tariffs on Canada, Mexico and China kicked in, sparking angry retaliation from all three.

Canadian Prime Minister Justin Trudeau slammed the tariffs as “a very dumb thing to do,” and said Trump was seeking to collapse Canada’s economy to make it easier for the United States to annex his country.

Mexican President Claudia Sheinbaum said she would be laying out her country’s response to the measures on Sunday.

Follow all the latest updates in our liveblog at the top of this page.