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Trump Pauses 50 Percent Tariffs on Canada and Claims Deal Is Near

Prime Minister Mark Carney of Canada was less definitive about what the intense talks produced, saying “important work” remained.

© Cole Burston/Agence France-Presse — Getty Images

Trucks passing over the Peace Bridge between Canada and the United States on Tuesday.
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The U.S. Military Wants A.I. Dominance. Feuds and China May Thwart It.

The administration is veering wildly in its response to the national security implications of A.I. as China, America’s main technological and military rival, charges ahead.

© Kenny Holston/The New York Times

Recent A.I. advances have roiled the Pentagon and the national security establishment.
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