March 5, 2025

Good morning. We’re covering the U.S. trade war and Ukraine’s response to President Trump’s pause of military aid.

Plus, a top architecture award for Liu Jiakun.

Prime Minister Justin Trudeau, yesterday. Adrian Wyld/The Canadian Press, via Associated Press

Canada and China retaliate against Trump’s tariffs

Canada and China yesterday condemned the sweeping tariffs imposed by the Trump administration and said they would retaliate against U.S. exports.

President Trump imposed 25 percent tariffs on imports from Canada and Mexico, and 10 percent on imports from China on top of a previous 10 percent. President Claudia Sheinbaum of Mexico said that if the U.S. tariffs were still in place on Sunday, she, too, would announce countermeasures.

“You’re a very smart guy,” Prime Minister Justin Trudeau said, addressing Trump. “But this is a very dumb thing to do.”

Trudeau said Canada would, in response, put 25 percent tariffs on $20.5 billion worth of unspecified U.S. goods. China announced levies on U.S. food imports and halted the sale of Chinese goods to 15 American companies. In Mexico, there were calls for boycotts of U.S. companies and products.

Markets rattled: The announcement triggered a sell-off in global markets.

The trade war loomed large over Trump’s upcoming address to Congress. We have live updates here.

More on Trump The Supreme Court dealt a blow to the E.P.A. in a ruling that could limit the environmental agency’s ability to cut down on offshore pollution. Friedrich Merz, the likely next German chancellor, agreed to borrow more to increase the country’s military and infrastructure spending, in a sharp response to Trump. The C.D.C. sent its “disease detectives” out to West Texas to help with a measles outbreak, which the Trump administration has been criticized for downplaying. Vice President JD Vance sparked outrage in Britain when he referred to it as “some random country that hasn’t fought a war in 30 or 40 years.” Tesla owners in the U.S. and around the world are selling their vehicles to protest Elon Musk’s actions in the White House. “Trump’s America is different”: Many ethnic Serbs in a Russia-friendly region of Bosnia and Herzegovina are cheering his reordering of the world. Track Trump’s actions since he took office.