Canada’s newly elected Prime Minister Mark Carney is set to visit the White House on Tuesday for a high-stakes meeting with President Trump amid an ongoing trade battle between the North American neighbors.

Tensions between Ottawa and Washington have been strained by Trump’s sweeping tariffs and his proposal for Canada to merge with the U.S.

Fresh off his election last week to succeed former leader Justin Trudeau, Carney has already warned that “our old relationship, based on steadily increasing integration, is over.” Meanwhile, Trump has signaled optimism ahead of the visit, predicting that the pair will have “a great relationship.”

Here’s what to watch as the two leaders sit down:

Tariff threat tit-for-tat

Trump’s tariffs have roiled world markets and leaders alike, kickstarting trade showdowns with key allies.

In on-again, off-again moves over the past several weeks, Trump has levied tariffs against Canada, one of its top trading partners, and Canada has hit back with import taxes of its own.

Trump and Carney will meet Tuesday in Washington against........

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