President Trump is back in Washington, pursuing major policy changes on his own terms.

We know from the past that means challenging precedent, busting norms, and pushing against the status quo.

NPR is covering it all with Trump's terms, a podcast where we curate stories about the 47th president with the focus on how he is upending the way Washington works.

Listen to Trump's terms from NPR.

Live from NPR news in Washington, I'm Nora Rom.

Canadian Prime Minister Justin Trudeau says Canada didn't ask for a trade war, but will not back down.

He says Canada will put a matching 25% tariff on U.S. imports.

After President Trump signed orders imposing stiff tariffs on Canada as well as Mexico and China,

China says it will take countermeasures, including filing a complaint with the World Trade Organization.

Mexican President Claudia Shanebaum is also ordering retaliatory measures.

NPR's Ader Peralta reports.

Mexico has been warning that a tariff war between the two countries would have huge effects,

not just for American consumers, but also for American companies manufacturing in Mexico.

Mexico is the number one provider of cars and car parts for the United States.

Mexico's economy secretary, Marcelo Ebrard, said Americans could see a hike in prices

in everything from avocados and beer to cars, trucks, and medical equipment.

The biggest impact, he said, is that millions of American families will have to pay

25% more.

Adapralta, NPR News.

Russia and Ukraine are trading blame for a deadly missile strike last night that killed at least four people

at a boarding school in a sliver of Russian territory occupied by Ukrainian forces. NPR's Charles

Mainz has details. The attack took place in the city of Suja in Russia's Korsk region occupied by

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