Americas — 2026-07-10

Trump Threatened to Tear Up 1908 Border Treaty With Canada Prompting Ottawa to Explore Reducing US Dependence Including Five Eyes Alternatives

BLUFOttawa's formal audits of US dependency across military, intelligence, and economic infrastructure mark a structural shift from alliance management to contingency planning that will accelerate allied hedging.

The Wall Street Journal reported that President Trump told then-Prime Minister Justin Trudeau in private phone calls that he would tear up the 1908 Boundary Convention defining the US-Canada border, telling him "I tear that up and your whole country unravels" 12. The calls came amid Trump's push to make Canada the 51st state; over dinner at Mar-a-Lago, after Trudeau's envoys tried to dissuade him from absorbing the country and an aide noted its 41 million people would lean Democratic, Trump proposed splitting Canada into two states, one red and one blue 13. After taking office in early 2025, Prime Minister Mark Carney commissioned a review of Canada's dependence on the United States for data storage, military hardware, payments processing and food 13. The Journal reported Carney subsequently discussed reduced US reliance with French President Emmanuel Macron and raised a UK-Canada fallback with British officials should Washington leave the Five Eyes intelligence alliance, though the idea did not advance 3.

Analysis
Carney's dependency review, spanning data storage, military hardware, payments and food supply, treats continued reliance on Washington as a live contingency rather than settled fact, and raising a UK-Canada fallback with London extends that hedging into core Five Eyes intelligence architecture. Other NATO capitals reading this account gain fresh incentive to accelerate their own hedging against US-centric defense and data infrastructure regardless of Trump's actual intent. The account surfaced well into Carney's tenure, suggesting Ottawa or allied officials saw value in publicizing the rupture rather than managing it quietly, though sourcing rests entirely on the Wall Street Journal's original investigation, with four secondary outlets merely relaying it. Canadian officials may equally have treated the threats as a negotiating tactic for price discovery rather than a genuine bid to redraw the border.

6 sources

The Canadian Who Steered Europe Away From the U.S. - The Wall Street Journal
The Canadian Who Steered Europe Away From the U.S. - The Wall Street Journal
Insiders leak story of Trumps diplomatic bombshell on Canada - Alternet
Trump's Jaw-Dropping Secret Threat to U.S. Ally Is Leaked - The Daily Beast
Carney's Davos speech written at 4 a.m., Trump's volatile call with Trudeau, and other things we learned from a WSJ article - National Post
Trump's shocking threat to long-time US ally leaked - The Mirror US