By P M Amza –

Two recent social media messages by Donald Trump—issued within days of each other amid escalating tensions surrounding the United States–Iran confrontation—have drawn attention not only for their tone, but for their extraordinary departure from established norms of statecraft.

In one message, the President openly threatened strikes on Iranian infrastructure, including power plants and bridges, while issuing a blunt demand to reopen the Strait of Hormuz—despite its disruption being linked to the escalating cycle of attacks involving the United States and Israel—language more characteristic of battlefield signalling than diplomatic communication. In another, he warned of the possible destruction of “an entire civilization” in a single night, while asserting that “complete and total regime change” could ultimately yield a positive outcome.

Taken together, these statements mark a striking shift—from calibrated deterrence to public coercion, and from strategic ambiguity to narrative justification. They reflect not only an escalation in rhetoric, but a narrowing of diplomatic space.

Yet the more telling development lies not in what was said, but in what followed: a conspicuous absence of endorsement, amplification, or even calibrated alignment from key US allies. In diplomacy, silence is seldom neutral. It is often deliberate—and in this instance, it may be signalling something far more consequential than momentary disagreement.

The Language of Ultimatum

Diplomatic communication has traditionally relied on precision, restraint, and ambiguity—tools designed to preserve room for manoeuvre. Even in moments of crisis, language is calibrated to signal resolve without foreclosing options.

The recent messages depart sharply from this tradition. The direct threat of targeting infrastructure, combined with explicit demands regarding maritime access, represents a form of public ultimatum rarely articulated so bluntly by a sitting president. The use of emotionally charged and abrasive language further erodes the distinction between strategic signalling and rhetorical escalation.

Equally notable is the framing of regime change not as a distant or implicit objective, but as an immediate and potentially desirable outcome. This reflects a transition from deterrence to justification—where the narrative of conflict is shaped in advance to legitimise its consequences.

The explicit reference to targeting infrastructure such as power plants and bridges raises deeper concerns under International Humanitarian Law. While the legality of such targets depends on whether they constitute military objectives, the public articulation of such threats in uncompromising terms risks blurring the line between legitimate military action and harm to civilian life. It touches directly on the core principles of Distinction and Proportionality.

Even where legal arguments may be advanced, the manner in which such threats are communicated matters. When a leader of a state that claims to uphold a rules-based international order adopts language that appears to normalise large-scale destruction, it raises questions not only of legality, but of consistency and credibility.More fundamentally, such language suggests that rhetoric may be compensating for constraints elsewhere—military, political, or diplomatic.

The Silence of Allies

If the messages themselves are striking, the response—or lack thereof—from allies is even more revealing.Historically, moments of heightened tension have elicited coordinated messaging from allied capitals. Even where differences existed, public statements were often carefully crafted to signal unity. Today, that pattern appears to be shifting.

Across Europe, the Gulf, and parts of Asia, reactions have been notably restrained. There has been little in the way of explicit endorsement or visible diplomatic alignment. Instead, what emerges is a pattern of cautious distance—an effort to avoid entanglement in a conflict whose trajectory remains uncertain.

This silence should not be mistaken for indifference. It reflects a broader recalibration of alliance behaviour, where states increasingly prioritise strategic autonomy over automatic alignment. In regions directly exposed to the consequences of escalation—particularly energy flows through critical chokepoints such as the Strait of Hormuz—such caution is both rational and strategic.

In this context, non-response becomes a form of response. It signals hesitation, divergence, and, in some cases, quiet resistance.

From Dignified Exit to Strategic Risk

Great powers rarely disengage without attempting to shape the terms of their exit. The distinction between a dignified disengagement and a disorderly one lies in the ability to retain control—over timing, narrative, and outcomes.

The Vietnam War illustrated how military withdrawal, when coupled with declining domestic support and fragile alliances, can lead to a loss of narrative authority. More recently, the US withdrawal from Afghanistan demonstrated how even overwhelming capability cannot guarantee a controlled exit in the absence of coordinated political and diplomatic alignment.

The present moment introduces an additional complication: the erosion of allied responsiveness. When partners are less willing to absorb the costs of alignment, the capacity of a great power to dictate the terms of disengagement diminishes.

In this context, the recent messaging assumes greater significance. When the language of diplomacy gives way to the language of ultimatum, it often signals not strength, but the limits of available leverage. Public pressure, rather than consolidating support, may instead accelerate distancing.

The risk, therefore, is not simply of a difficult exit, but of one in which both narrative and outcome are shaped increasingly by others.

The Rise of Middle Powers

As great power dynamics become more fluid, the role of medium-sized states is correspondingly expanding. These states are not in a position to dominate the international system, but they are increasingly capable of influencing its direction.

This evolving reality has been noted by Mark Carney, who, speaking at the World Economic Forum Annual Meeting, observed that the global order is moving away from a single centre of gravity towards a more fragmented and multipolar structure. In such a system, influence is distributed rather than concentrated, and outcomes are shaped through networks of states rather than dictated by any one power.

Through selective alignment, issue-based coalitions, and strategic neutrality, middle powers are carving out space to pursue their interests without being drawn into rigid bloc politics. This is evident across multiple regions—from the Gulf to South and Southeast Asia—where strategic balancing has become the defining feature of foreign policy.

Such behaviour reflects a broader transformation in the international system. Influence is no longer exercised solely through hierarchy, but through networks—where the ability to connect, mediate, and adapt becomes as important as raw power.

For countries like Sri Lanka, this evolving landscape presents both opportunity and challenge. Strategic location and diplomatic agility offer avenues for engagement, but they also require careful navigation of competing pressures. The ability to maintain credibility across multiple partnerships becomes a central pillar of foreign policy.

Conclusion: When Power Speaks but Norms Are Tested

The significance of recent developments lies not in any single statement, however controversial, but in the pattern they reveal. When rhetoric intensifies but responses diminish, the underlying dynamics of power are shifting.

The United States retains unmatched military and economic capabilities. Yet in an increasingly complex international environment, influence depends not only on capacity, but on consent—the willingness of others to align, support, and participate.

At the same time, the nature of recent rhetoric raises a deeper concern. When language that appears to normalise large-scale destruction enters the public domain, it risks eroding the very norms—legal and moral—that underpin the international system. The credibility of a rules-based order depends not only on its enforcement, but on the consistency with which it is articulated by those who claim to defend it.

If current trends persist, Washington risks not merely a difficult disengagement, but one in which control over both narrative and outcome is diminished. The terms of exit may be shaped less in Washington than in the capitals of those who were once expected to follow.

Such an outcome would not mark the end of American power. But it would signal a transition—towards a more diffused and negotiated international order, where middle powers play a greater role, and where rhetoric alone is no longer sufficient to command response.

In that sense, the question is not simply whether the United States is approaching an undignified exit from  its dominant role in shaping the global  order . It is whether, in the process, it risks weakening the very norms that once underpinned its leadership.

References

1. Donald Trump, posts on Truth Social (via @realDonaldTrump), April 2026.

2. Charles A. Kupchan, Isolationism (Oxford University Press, 2020).

3. Fredrik Logevall, Embers of War (Random House, 2012).

4. Carter Malkasian, The American War in Afghanistan (Oxford University Press, 2021).

5. Andrew F. Cooper, The Oxford Handbook of Modern Diplomacy (Oxford University Press, 2013).

6. Mark Carney, remarks at the World Economic Forum Annual Meeting.

*The author is former Sri Lanka’s Ambassador to EU, Belgium, Turkey, Ukraine and Saudi Arabia and former Additional Secretary, Ministry of Foreign Affairs