Key Takeaways
- Prime Minister Mark Carney declared in March 2025 that the historic, deeply integrated Canada‑U.S. defence relationship is “over,” but he framed the shift as an evolution rather than a sudden break.
- Canada’s Defence Industrial Strategy signalled a move away from reliance on U.S. arms exports, yet Canadian forces remain embedded in U.S. units and joint operations continue largely unchanged.
- Senior analysts (Peter Jones, Stephen Saideman) and former politicians (John McKay, Donna Dasko, Andrew Cardozo) agree that while Canada seeks greater sovereignty and independent procurement, practical constraints—especially the need to defend North America together—keep the two militaries closely linked.
- The U.S. pause of the Permanent Joint Board on Defence in May 2025 was interpreted by Canadian officials as a superficial move that masks deeper strategic divergence and a U.S. preference for unilateral action.
- Despite rhetorical distancing, diplomatic gestures such as U.S. Ambassador Pete Hoekstra’s Armed Forces Day awards highlight enduring personal and institutional ties that date back to World War II.
- Ongoing deliberations over the F‑35 fighter‑jet fleet exemplify Canada’s struggle to balance independence with interoperability, raising questions about future defence culture change within the Canadian Armed Forces.
Carney’s Declaration of a New Defence Era
In March 2025 Prime Minister Mark Carney told reporters that Canada’s economic and defence relationship with the United States had fundamentally changed, stating, “The old relationship we had with the United States, based on deepening integration of our economies and tight security and military cooperation, is over.” He emphasized that the shift was not a dramatic rupture but an evolution, suggesting that while the psychological underpinnings of the partnership were altering, day‑to‑day cooperation would persist in many areas. Carney’s remarks came amid heightened tensions, including U.S. President Donald Trump’s rhetoric about potentially absorbing Canada as a “51st state,” which added urgency to Ottawa’s reassessment of its defence posture.
Defence Industrial Strategy Signals a Pivot
Later in 2024 Canada released its Defence Industrial Strategy, which explicitly signalled a pivot away from reliance on U.S. arms exports. The strategy outlined plans to diversify procurement, boost domestic defence production, and reduce vulnerability to external supply shocks. Analysts noted that the document represented a clear policy intent to strengthen Canadian sovereignty over defence materiel. Nevertheless, the strategy stopped short of dismantling existing mechanisms of integration; Canadian Forces members continued to serve alongside U.S. units, and many procurement programs remained tied to American manufacturers.
Expert Views on an Evolutionary Shift
University of Ottawa professor Peter Jones, a former senior analyst in the Privy Council’s Security and Intelligence Secretariat, characterized Carney’s pronouncement as an evolution rather than a sudden break. He argued that psychologically the relationship had changed, but operational realities meant Canada would still collaborate closely with the U.S. in certain domains while pulling back in others. Jones warned that any meaningful delinking would require sustained political leadership to overcome entrenched habits within the military bureaucracy.
Continued Joint Operations Despite Rhetoric
Defence Minister David McGuinty echoed the sentiment that Canada and the U.S. continue to “work hand in glove together,” as reported by Global News. His remarks underscored that, despite political signalling, practical cooperation remained robust. Joint exercises, intelligence sharing, and combined logistics still formed the backbone of North American defence, illustrating the gap between strategic rhetoric and operational continuity.
U.S. Pause of the Permanent Joint Board on Defence
On May 18 2025 the United States announced it would be “pausing” the Permanent Joint Board on Defence to “reassess how this forum benefits shared North American defense.” The board, established by the 1940 Ogdensburg Agreement, had served as a semi‑annual venue for senior military officials to align strategic views, ensure joint accountability, and oversee cooperative projects. Former Liberal MP John McKay, a past chair of the Canadian section of the board, denounced the pause as “nothing good” for bilateral integration, arguing it reflected growing political divergence and a U.S. inclination to act unilaterally on the global stage. He suggested the timing—coinciding with Canada’s push to meet NATO’s two‑percent‑of‑GDP defence spending target—raised suspicions that the move was motivated by dissatisfaction with Canadian defence contributions.
Ambassador Hoekstra’s Affirmation of Ties
Contrasting the board’s pause, U.S. Ambassador to Canada Pete Hoekstra celebrated the defence relationship during Armed Forces Day on May 12 2025. Speaking at the U.S. Embassy, Hoekstra presented medals to Canadian Forces personnel, including Brigadier General Martin Corriveau, who received the Legion of Merit for service as deputy director of operations at the U.S.-led United Nations Command in South Korea. Hoekstra highlighted historical cooperation dating to World War II, referencing his own family’s liberation by Canadian troops in the Netherlands. He affirmed that the partnership remained “awesome” and stressed that both nations would continue to draw on a century of shared experience to keep North America safe amid an increasingly complex threat environment.
Senatorial Perspectives on Sovereignty and Dependence
Independent Senator Donna Dasko, a member of the Senate National Security and Defence Committee, described the defence relationship as “evolving.” She credited the Defence Industrial Strategy for moving Canada toward greater independence and sovereignty, yet acknowledged the difficulty of fully disentangling from U.S. military structures. Dasko pointed to Canada’s indecision over acquiring a full fleet of F‑35 fighter jets as a deliberate signal of pulling back from U.S.‑centric arrangements, while simultaneously recognizing that North American defence inevitably requires American cooperation—even if the U.S. becomes a less reliable ally.
Progressive Senator Andrew Cardozo, also on the Senate committee, framed the situation as a “real conundrum.” He noted that Canada’s longstanding instinct is to stay closely coordinated with the United States, but U.S. pressure to procure American equipment creates a constant tightrope: Ottawa must avoid antagonizing its neighbor while resisting over‑reliance on U.S. suppliers. Cardozo warned that navigating this balance would require nuanced policymaking and clear strategic priorities.
Cultural and Institutional Challenges Within the Canadian Military
Stephen Saideman, director of the Canadian Defence and Security Network at Carleton University, argued that tangible examples of delinking remain scarce because major procurement decisions—such as the final F‑35 purchase—have not yet been settled. He observed that the Canadian military’s culture is deeply accustomed to operating alongside U.S. forces, with many senior officers having spent careers in exchange programs or U.S. military colleges. Saideman contended that a shift toward independent defence postures would necessitate a cultural transformation, whereby military leaders align their planning and training with civilian directives even when it disrupts long‑established habits.
Peter Jones reinforced this view, noting that senior ranks have been trained to view U.S. interoperability as the cornerstone of Canadian military capability. Changing that mindset would require deliberate political direction and possibly revised training curricula that emphasize cooperation with alternative partners. Both experts warned that without such cultural adjustment, any strategic pivot risked being superficial, leaving Canada strategically exposed despite its stated aspirations for greater autonomy.
The F‑35 Dilemma as a Litmus Test
The ongoing debate over Canada’s F‑35 fighter‑jet fleet encapsulates the broader tension between independence and interoperability. Ottawa had already purchased 16 jets and funded key components for another 14, but Carney ordered a procurement review in March 2025 amid deteriorating U.S. relations and Trump’s annexation talk. Senator Dasko interpreted the hesitation as a deliberate signal of pulling back, while analysts like Saideman cautioned that delaying a final decision hampers the ability to assess the broader impact on defence culture and industrial policy. The outcome of the F‑35 decision will likely serve as a barometer for how far Canada is willing—or able—to diverge from its traditional defence reliance on the United States.
Conclusion: An Evolving, Not Severed, Partnership
Collectively, the evidence suggests that while political rhetoric under Prime Minister Carney has signaled a desire to redefine Canada’s defence ties with the United States, the operational reality remains one of deep integration. The Defence Industrial Strategy points toward diversification, yet Canadian forces continue to serve within U.S. units, joint exercises persist, and high‑level diplomatic engagements—exemplified by Ambassador Hoekstra’s Armed Forces Day remarks—affirm enduring personal and institutional bonds. The pause of the Permanent Joint Board on Defence underscores growing strategic divergence, but commentators warn that this move may be more symbolic than substantive. Ultimately, Canada’s path forward will hinge on reconciling the aspiration for greater sovereign defence capability with the practical necessity of cooperating with its closest ally to ensure continental security—a balancing act that will demand both political resolve and a cultural shift within the Canadian Armed Forces.