Fractures Appear in Western Coalition

Published: 18 Apr 2026, 12:00 AM Updated: 18 Apr 2026, 04:27 AM

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Recent developments in US foreign policy are no longer easily read in the narrative of collapse or continuity. The current crisis, in all its complexity, does not reflect so much an inevitable disintegration of the political system in the United States as it reveals a profound shift in the nature of the American role itself. This shift is clearly manifested in the way the escalation is managed with Iran and in the unprecedented tension within Western alliances, led by the North Atlantic Treaty Organization (NATO).

The escalation adopted by the Trump administration against Iran, especially by putting forward the option of a naval blockade, was not merely a military posture. It was a test of the nature of American leadership in a new international phase. Remarkably, this escalation coincided with a clear refusal by key allies within NATO, such as Britain and France, to engage in it. This rejection indicates a deeper change in the logic of the relationship between Washington and its allies rather than a passing tactical dispute.

In essence, this moment reveals a structural tension within the American decision-making apparatus. On the one hand, there is the logic of strategic realism that takes into account the cost of escalation, the importance of cohesion of alliances, and the stability of global energy markets. On the other hand, there is internal political and ideological pressure that pushes towards showing decisiveness, affirming prestige, and avoiding any appearance of retreat. This tension did not remain theoretical but was reflected in practice in the contrast between the initially hardline political discourse and the subsequent amendments that limited the scope of escalation as the administration attempted to reconcile political ambition with military feasibility and legal constraints.

But most important of all, this situation reveals a shift in the nature of American alliances. The relationship is no longer based on near-automatic acceptance of American leadership but is moving towards a more complex model that can be described as a conditional selective alliance. In this model, allies are no longer prepared to bear the cost of decisions that they do not see as serving their immediate interests or falling within the agreed collective defence framework. This is not to say that Western alliances are on their way to disintegration, as some hasty rhetoric has suggested. What can be observed precisely is that certainty is eroding, particularly on the European side, about the durability of unconditional dependence on the United States. Repeated signals of the possibility of a reduction in U.S. military commitment in Europe and pressures to engage in non-NATO priorities are pushing Europeans to rethink their position within the Atlantic equation.

The implications of this shift are particularly evident in dealing with Iran. The absence of coalition consensus limits Washington’s ability to transform its military superiority into an international coalition that grants political legitimacy to any escalation. Prolonged operations, such as the naval blockade, become more expensive and less sustainable in the absence of collective support. In return, this division gives Iran a wider margin of manoeuvre and encourages it to adopt strategies based on wearing down American will instead of confronting it directly.

However, the implications of this shift are not limited to the Middle East but extend directly to the Russian war on Ukraine, which today is the most important test of the cohesion of the West. Western support for Kyiv has, since the February 2022 invasion, depended on a high degree of NATO coordination and on the clarity of American leadership in unifying positions and distributing burdens. But as the selective alliance pattern emerges, this cohesion becomes more fragile, and decisions turn from being a reflection of a strategic consensus to a negotiated outcome between different national priorities. In this context, Western support for Ukraine is not expected to collapse suddenly, but it may become slower and more reluctant, especially if Washington is forced to redistribute its resources and attention towards other theatres. Most importantly, these signals do not go unread in Moscow, where Putin is watching any rift on the Western front as an opportunity to prolong the war and test the limits of deterrence. Thus, the effect of the shift in American leadership does not appear in the form of a direct withdrawal but in a gradual reshaping of the nature of Western commitment, from unified and reliable support to more uneven and conditional support, a shift that may be sufficient to influence the course of the war itself.

On a deeper level, what we are witnessing today is not just a management crisis or a passing dispute within alliances. It is an expression of a fundamental mismatch between the instruments of conventional American power and an international environment that has grown more pluralistic and less deferential. The United States remains the most prominent military power, but it is facing increasing difficulty in turning this force into a stable political outcome without broad coalition support.

The conclusion is that the current crisis does not mean the collapse of the American leadership, but it clearly indicates its transition from a model based on coalition discipline and the production of consensus to one that is more impulsive and less capable of building international consensus. This shift, if it continues, will not only limit the effectiveness of US policies toward Iran but may redefine one of the most important sources of American power historically: its ability to lead through the coalition, not through power alone.

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The writer is the Ambassador of Palestine to Bangladesh