Canadian Prime Minister Mark Carney used his World Economic Forum address to warn middle powers they can no longer rely on a stable rules-based order, urging preparation for a reality where great powers weaponize economic integration. His message found an unexpected echo in Mexico.

Mexican President Claudia Sheinbaum endorsed Carney’s analysis, calling it "in tune with the current times." The alignment underscores shared anxiety among middle powers facing aggressive U.S. trade and territorial rhetoric, with both nations seeking deeper cooperation ahead of the critical CUSMA renewal negotiations.

The diplomatic shift follows social media provocations from Washington, including an image of the U.S. flag covering Canadian territory. Carney’s rhetoric drew a sharp rebuke from U.S. President Donald Trump, who asserted American military protection and warned Carney to remember that dominance.

For investors, this signals a potential recalibration of North American trade dynamics. Businesses should monitor how Ottawa and Mexico City coordinate strategies, as a united front could influence tariff structures and supply chain rules in the next continental trade pact.