Beijing said it was “strongly dissatisfied” with President Donald Trump’s move to raise tariffs on Chinese goods and said it would “take countermeasures.”

Long-threatened tariffs on Canada and Mexico will go into effect Tuesday, as will increased levies on China, President Trump confirmed. Why it matters: The tariffs are expected to trigger a trade war with the three largest U.S. trading partners, one that could raise prices for American consumers on a broad range of products.