What we know:

• Donald Trump says he will introduce 25% tariffs on goods coming from Canada and Mexico on day one of his presidency
• He also says he’ll add an extra 10% on goods coming from China – imports from there to the US are already subject to some tariffs
• For context: A tariff is a tax paid on goods as they enter a country. The company importing the goods pays the tax, not the foreign company that exports them
• Trump says the tariffs are in response to “crime and drugs” coming across the southern and northern borders of the US
• China calls it “irresponsible” and warns that no-one will win a trade war.
• Doug Ford – leader of Canada’s most populous province, Ontario – says a 25% tariff would be  “devastating to workers and jobs” while the head of Mexico’s Senate says  the US needs to stop consuming drugs