This brief is part of the Strategic Analysis Network’ special Back to the Future essay series, which was financed through a grant from the Department of National Defence’s MINDS program.
Introduction
On 20 April 1968, following the resignation of Prime Minister Lester B. Pearson, Pierre Elliott Trudeau took the helm of the Canadian government with the explicit intention of challenging the foundations of the foreign policy inherited from his predecessors. Just three days after taking office, he called a general election and swiftly announced the launch of a comprehensive review of Canadian foreign policy. This initiative went far beyond a mere administrative reorganisation: it aimed to challenge the fundamental assumptions that had guided Canada’s international policy for nearly two decades, notably the maintenance of a military contingent of around 10,000 troops deployed in Europe on a continuous basis since 1951 and membership of the North Atlantic Treaty Organisation (NATO).
For Trudeau, defence policy should stem from foreign policy priorities, and not the other way round. In other words, it is not Canada’s commitment to NATO that should determine the general direction of its foreign policy, but rather a prior definition of national interests and capabilities. During the election campaign of May–June 1968, Trudeau described NATO as a ‘relic of the 1950s’ and publicly questioned the relevance of maintaining a ‘strong military presence’ in Europe. He argued for a reorientation of Canada’s strategic priorities towards North America and for greater decision-making autonomy vis-à-vis the United States. However, in December 1969, following eighteen months of in-depth review, the Trudeau government adopted a policy that instead confirmed the continuation of Canada’s commitment to NATO, whilst nevertheless announcing a reduction in troop numbers from 10,000 to 5,000.
This policy brief examines Pierre Elliott Trudeau’s attempt at strategic autonomy, which sought to free Canadian defence policy from its structural dependence on NATO and the United States. Despite a majority government and considerable political capital, this endeavour yielded only modest results: a reduction in troop numbers from 10,000 to 5,000, well short of the radical transformation initially envisaged. Its legacy, however, is best assessed over the longer term.
More than half a century later, Canada has still not undertaken a comprehensive review of its foreign policy, limiting itself to exercises confined to defence policy. This institutional trajectory suggests that the Trudeauist vision—which involves subordinating defence commitments to national interests rather than alliance imperatives—has gradually become the implicit assumption of the Canadian government apparatus, without ever having been fully translated into action in the short and medium term. Nevertheless, structural dependence on the United States and NATO remains a key issue in 2026.
At a time when Prime Minister Mark Carney, in turn, aspires to reshape Canada’s strategic relationship with the United States and consolidate Canadian decision-making autonomy against a backdrop of growing bilateral tensions, Trudeau’s experience nevertheless constitutes an instructive precedent. The obstacles to a reorientation of defence policy in the short and medium term are structural in nature, persistent, and capable of eroding even the most robust mandates. An analysis of the bureaucratic, allied and political constraints that limited Trudeau’s room for manoeuvre thus helps to identify the pitfalls to be avoided and the preconditions for the feasibility of a genuine strategic reorientation.
Internationalist Orthodoxy and its Challengers
Canada’s post-war foreign policy coalesced around a dominant consensus, developed under the government of Prime Minister Louis St Laurent between 1948 and 1951, with Lester B. Pearson serving as Secretary of State for External Affairs. This internationalist orthodoxy was based on several central principles: active engagement within multilateral institutions, notably NATO; the conviction that Canada’s security was inextricably linked to that of the international community; and the belief that Canada could exert disproportionate influence through its role as a mediator and ‘middle power’ on the world stage. This approach is also based on the observation that the national territory remains relatively sheltered from direct threats, at least those over which Canada would have any agency. Canadian foreign policy after the Second World War was firmly rooted in a transatlantic axis (NATO), an internationalist commitment (UN) and a significant bilateral continental relationship (or integration) with the United States.
This consensus is supported and perpetuated by a particularly cohesive bureaucracy. The Department of External Affairs, comprising some 200 civil servants from largely homogeneous social and educational backgrounds, thus exercised a decisive and rarely challenged influence over the formulation of foreign policy. Although John Diefenbaker’s Progressive-Conservative government (1957–1963) challenged certain elements of this orthodoxy, its attempts at reform remained limited and did not undermine the fundamental assumptions of this internationalism. Pearson’s return to power in 1963, this time as Prime Minister, revitalised this framework, although the constraints of a minority government and the changing strategic environment limited his room for manoeuvre.
The arrival of Pierre Elliott Trudeau marked an intellectual and political break with this tradition. His education, shaped in particular by his time in Paris after the Second World War, exposed him to European debates on the emergence of a ‘third force’ seeking to transcend the binary logic of the Cold War. At the Institut d’études politiques and in circles associated with journals such as Esprit and Le Monde, Trudeau developed a conceptual critique of this ideological dualism. He rejected both communism and orthodox anti-communism, refusing, in his own words, to “be enlisted in either of the totalitarianisms” and denouncing the “dangerous” division of humanity into antagonistic blocs.
These convictions were already evident during his time at the Privy Council Office between 1949 and 1951. Under the Louis St. Laurent government, Trudeau opposed Canadian participation in the Korean War and the rapid deployment of Canadian forces to Europe from 1951 onwards, which he interpreted as manifestations of an automatic alignment with US leadership. Elected as an MP in 1965 and appointed Minister of Justice in 1967, he quickly became one of the most articulate critics of this defence orthodoxy, questioning ‘the futility of much of our military effort’.
Trudeau was not, however, alone in this challenge. A left-wing faction within the Liberal Party, led by former Finance Minister Walter Gordon, mounted the most serious challenge to the post-war consensus. This group included members of Pearson’s cabinet, such as Allan MacEachen and Edgar Benson, as well as Quebec MPs Jean Marchand and Gérard Pelletier, close associates and personal friends of Trudeau. Together, they argued that Canadian defence policy needed to be reassessed in order to reduce its dependence on the United States and to rethink Canada’s participation in NATO and NORAD. In 1967, Gordon brought together Trudeau, Marchand and senior civil servants, including Marcel Cadieux and Basil Robinson, to argue that the economic recovery in Europe now rendered Canada’s military presence on the continent excessive.
Reform and Bureaucratic Resistance
On 15 May 1968, three weeks after Trudeau came to power and in the midst of the election campaign, the Cabinet endorsed a recommendation from the Cabinet Committee on Priorities and Planning to launch a comprehensive review of Canadian Armed Forces policy. The directive called for an examination of alternative force structures, their costs and the available strategic options, with a report due by mid-July. This decision established the institutional framework for the reorientation sought by the new Prime Minister.
The election victory of 25 June 1968, which gave the Liberals a comfortable majority of 155 seats out of 264, considerably strengthened Trudeau’s political mandate. He argued that the international strategic environment had changed profoundly since the Second World War and that Europe no longer required the maintenance of a ‘strong military presence’ by Canada to ensure its security. Some observers, particularly in academic circles, believed that Canada’s military commitment in Europe had little real influence among allies, given the lack of particularly close economic or cultural ties with the continent.
This view is also widely echoed in public opinion, although popular support varies depending on the issues at stake. Polling data indicates that a clear majority of Canadians, nearly 74 per cent, want a foreign policy that is more independent of the United States, a sentiment that is particularly pronounced among Liberal voters. A comparable proportion opposes maintaining US access to Canadian bases and airspace, revealing a nationalist current on which Trudeau can legitimately rely to justify his review process. The issue of European military disengagement, however, elicits more divided responses: around a third of respondents say they favour the withdrawal of Canadian troops from Europe and consider the level of military forces excessive, whilst a majority remain committed to these commitments. Trudeau thus had a real base of support, but one insufficient to claim an unequivocal popular mandate in favour of withdrawal from NATO, even though, here again, Liberal voters were significantly more receptive to this stance than the electorate as a whole.
Trudeau’s political vision, however, met with marked institutional resistance within the Department of External Affairs. As early as the beginning of 1968, even before Trudeau’s election as leader of the Liberal Party, the department produced an internal study explicitly recommending the retention of Canadian forces in Europe. Its author, Norman Robertson, was no ordinary observer. A senior career civil servant and one of the principal architects of Canada’s post-war internationalist stance, he embodied precisely the orthodoxy that Trudeau sought to challenge. Robertson concluded that neutrality was impractical and that Canada’s international influence depended on its commitment to NATO. His reasoning is based on a logic of reciprocity: Canada’s military presence in Europe constitutes the bargaining chip that gives Ottawa a seat at the table of the major Western powers and enables it to exert influence on issues extending far beyond the strictly military sphere. Withdrawing these forces would therefore amount to voluntarily depriving Canada of the levers of influence upon which its international status has rested since 1949. This analysis reflects a deeply rooted conviction within the Canadian bureaucracy, namely the idea that European military engagement is not an end in itself, but the structural foundation of Canada’s diplomatic clout on the world stage.
The Under-Secretary of State for External Affairs, Marcel Cadieux, plays a central role in this resistance. A career civil servant closely associated with internationalist and Atlanticist orthodoxy, Cadieux viewed Trudeau’s positions as excessively idealistic, even dangerous. Using his privileged access to the Prime Minister and his control over the flow of information, he helped to slow down and steer the review process. The documents submitted to Trudeau systematically highlighted the diplomatic risks of a withdrawal, the political costs vis-à-vis allies, and the resulting loss of international influence. This resistance, discreet but persistent, forced the Prime Minister to operate within a bureaucratic environment largely hostile to his reform objectives.
Allied Pressure and the Constraints of Alliances
At the same time, NATO partners, in particular the United States, the United Kingdom and the Federal Republic of Germany, were exerting sustained diplomatic pressure to ensure Canada remained committed. The Soviet invasion of Czechoslovakia in August 1968 significantly strengthened the case for maintaining Western forces in Europe.
It should be noted, however, that this event was only able to exert such a decisive influence because the review process was still ongoing at the time of the crisis. Bureaucratic resistance and external pressures are therefore not independent factors: it was precisely the institutional slowdown of the process, fuelled by the discreet opposition of the Department of External Affairs, that opened a window of opportunity in which international events were able to shift the political balance of power in favour of the status quo. The ability of bureaucratic apparatuses to delay reforms thus constitutes, in itself, a mechanism of resistance to change.
Washington made it clear to Ottawa that a Canadian withdrawal would be interpreted as a signal of Western disengagement likely to encourage other allies to reduce their contributions, at a time when the US military effort was heavily tied up in the Vietnam War. Germany expressed similar concerns, stressing that a Canadian withdrawal would weaken its defensive posture vis-à-vis the Soviet Union. London, engaged in its own force reductions for budgetary reasons, feared a knock-on effect among European allies.
This pressure manifested itself through various diplomatic channels: bilateral exchanges, interventions at NATO meetings and informal contacts between senior officials. The Trudeau government thus found itself faced with a strategic dilemma: a withdrawal risked isolating Canada within the Alliance and reducing its influence on other issues, whilst maintaining the commitment contradicted the Prime Minister’s election promises and intellectual vision.
Internal Divisions and Parliamentary Opposition
Tensions were not confined to the international arena. Within the Cabinet, divisions ran deep. A faction led by Walter Gordon, Jean Marchand and Gérard Pelletier continued to advocate a substantial reduction, or even a complete withdrawal, of Canadian forces from Europe, whilst other ministers, notably those responsible for defence and foreign affairs, favoured continuity. Mitchell Sharp, appointed Secretary of State for External Affairs in 1968, gradually adopted a cautious stance, warning of the diplomatic consequences of a rapid withdrawal.
In the House of Commons, opposition was vigorous and cross-party. Robert Stanfield’s Progressive Conservative Party denounced any reduction as a weakening of Western security and a dereliction of Canada’s international responsibilities, arguing that NATO remained ‘the West’s best instrument of collective defence’. Even the New Democratic Party, though critical of the Atlantic Alliance, was reluctant to support a complete withdrawal, favouring instead a gradual transition towards a more inclusive and political collective security system in the context of détente between the two blocs.
The parliamentary debates of April 1969, following the announcement of the reduction of Canadian forces from 10,000 to 5,000 troops, once again highlighted these divisions. The Conservatives described the decision as “one of the gravest errors in Canadian foreign policy”, arguing that it came at an inopportune moment. Although the Liberal majority made any institutional challenge unlikely, the debate imposed real political costs by publicly framing the reduction in forces as a strategic error, thereby restricting the Prime Minister’s room for manoeuvre.
The Compromise: A Reduction, But the Commitment Remains
Faced with bureaucratic, allied and political constraints, Trudeau accepted a compromise that fell well short of his initial ambitions. On 3 April 1969, he announced that Canada would remain a member of NATO, ruling out any option for neutrality or non-alignment. This decision was accompanied by a reordering of defence policy priorities, in which national sovereignty and continental defence took precedence over the commitment to NATO and peacekeeping missions. This prioritisation aimed to reconcile the desire to reduce costs and strategic dependence with the need to preserve Canada’s international credibility.
The publication in 1970 of the document Foreign Policy in the Service of Canadians institutionalised this approach. Structured around six priorities—sovereignty and independence, peace and security, social justice, quality of life, harmony with the environment and economic prosperity—the document presents NATO as an important but not exclusive pillar of Canadian security policy. It states in particular that ‘Canada can contribute effectively to international peace and security only if it preserves its independence of judgement and action’, signalling a persistent desire to maintain a critical distance from Atlantic orthodoxy. Trudeau sought to subordinate policy towards NATO to foreign policy rather than the other way round.
In practice, however, Canada remains closely integrated into NATO structures. Admittedly, Trudeau has managed to achieve other significant breaks, notably the withdrawal of US nuclear missiles from Canadian soil. However, on the specific issue of Canada’s stance within the Atlantic Alliance—which is the subject of this analysis—Trudeau’s experience illustrates the structural limitations faced even by a Prime Minister with a strong mandate and a reformist agenda when seeking to fundamentally transform Canada’s collective defence commitments.
Lessons From Trudeau’s Failure for the Carney Government
Rapidly institutionalizing public support
Trudeau’s failure shows that even a majority mandate and high levels of public support are not enough to transform defence policy unless political capital is swiftly converted into irreversible institutional decisions. The publication, on 17 February 2026, of Canada’s first Defence Industrial Strategy reflects, in part, a willingness to learn this lesson. Indeed, whilst a significant proportion of the support for this rapid increase in military capabilities is linked to the polarising figure of Trump, 89% of Canadians believe that the defence industry can benefit the wider economy. In doing so, by linking rearmament to the creation of local jobs—notably through the target of increasing the share of procurement awarded to Canadian companies to 70% and the promise of 125,000 jobs over ten years—the Carney government is seeking to build a coalition of sustainable economic interests in favour of military investment. The creation of the Defence Investment Agency, designed to centralise and accelerate procurement, also aims to establish an institutional reality.
This approach, however, faces a tension that Trudeau’s experience has made all too familiar. Whilst the Carney government professes a desire to reduce Canada’s dependence on the United States and to diversify defence partnerships, the Canadian Armed Forces remain deeply integrated into the bilateral relationship with Washington, on which interoperability, access to cutting-edge capabilities and the conduct of major operations depend. The cautious wording of the Strategy, which simultaneously affirms the priority given to Canadian suppliers and the desire to maintain a strong Canada-US defence relationship, betrays this unresolved tension. This defence policy under Carney thus suggests a civil-military tension that could hinder the implementation of the government’s objectives. The risk is that this ambiguity, comparable to that which paralysed Trudeau’s review between reformist zeal and institutional resistance, will gradually dilute the initial political momentum.
Anticipating allied pressure to avoid diplomatic isolation
In the late 1960s and early 1970s, Trudeau found himself largely isolated in the face of a united Western front, unable to anticipate the pressure from Washington, London and Bonn, which was intensified by the Czechoslovak crisis. Today, Carney finds himself in a markedly different context: the United States will seek to maintain Canadian dependence through trade and interoperability requirements, but unlike in the 1960s, the sustained erosion of transatlantic trust is leading many European and Indo-Pacific allies to seek to diversify their own defence partnerships and supply chains.
Canada’s participation in the European Union’s Readiness 2030 programme, the signing of further defence partnerships, and the consideration of a mixed fleet of F-35 and Gripen fighters all illustrate this approach to diversification through concrete commitments. More broadly, the development of targeted mini-lateral coalitions, notably with the United Kingdom, the Nordic and Baltic countries, or certain Indo-Pacific partners, would enable Canada to wield collective leverage and create faits accomplis. This convergence offers Canada a window of opportunity that Trudeau did not have: the chance to embed its diversification within a collective movement rather than appearing to act alone.
Image Credit: Chiloa, CC BY-SA 3.0, via Wikimedia Commons
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