April 7, 2026
News Analysis
Washington, D.C.
U.S. President Donald Trump escalated tensions sharply on Monday, issuing a stark threat to Iran: unless Tehran effectively surrenders, Washington would begin, as early as Tuesday night at 8:00 p.m., (Washington time) a campaign to destroy “every bridge, every power station, everything.” The thuggish bellicosity of the statement notwithstanding, the United States does possess such destructive capacity. Yet exercising it would almost certainly trigger a global economic crisis unprecedented in the 21st century, while cementing America’s status—alongside Israel in the eyes of many—as a pariah, lawless power willing to dismantle the norms it once claimed to uphold.
When John Wertheimer appeared on Al Jazeera’s “The Bottom Line” with host Steve Clemons on April 3, 2026, the central question was deceptively simple: will the ongoing war with Iran diminish American power?
It is the kind of question that invites dramatic answers. Wars, especially difficult and protracted ones, are often framed as decisive turning points in the fate of great powers. Yet a sober assessment suggests something far less sensational but analytically sharper: the war in Iran is unlikely to significantly alter the United States’ position in the global balance of power. What it may erode, however, is something subtler and more fragile—America’s credibility, judgment, and ability to translate power into influence.
At the core of this argument lies a foundational insight from structural realism: a state’s power is rooted primarily in material capabilities, including economic strength, technological sophistication, and demographic weight. By these measures, the United States remains extraordinarily resilient. A single conflict, even a costly and poorly managed one, is unlikely to meaningfully dent these structural foundations.
History offers a compelling parallel. The United States suffered a decisive and humiliating defeat in the Vietnam War, a conflict that fractured domestic consensus and damaged Washington’s global standing. Yet this setback did not produce lasting decline. Within less than fifteen years, the United States emerged victorious in the Cold War, cementing its position as the world’s sole superpower. The lesson is clear: even disastrous battlefield outcomes do not automatically reorder the global hierarchy of power. Structural advantages tend to endure across crises and generations.
If the Iran war is unlikely to weaken American power in absolute or relative terms, it is nevertheless exposing a more immediate and consequential vulnerability: the erosion of the United States’ ability to project that power effectively.
Power, after all, is not merely about possession. It is about conversion. It must be translated into influence, deterrence, and leadership. And here, the current moment is far more troubling.
The conduct of the war, combined with the broader foreign policy approach under Trump, raises serious questions about strategic competence. Military setbacks are not merely tactical failures; they are signals. Allies and adversaries alike interpret them as indicators of judgment, reliability, and resolve. When Washington appears unable to achieve its objectives—or worse, unclear about what those objectives are—it invites doubt that lingers long after the fighting subsides and shapes future calculations.
More damaging still is the broader pattern of behavior accompanying the war. The sidelining of diplomacy, the disparagement of allies, and the erosion of international institutions collectively weaken what has long been America’s greatest strategic asset: its network of partnerships.
Power in the modern international system is deeply relational. The United States does not act alone; it operates through alliances, institutions, and shared norms. By undermining these pillars through rhetoric or neglect, Washington reduces its own capacity to mobilize collective action. This is not a marginal cost. It strikes at the very mechanism through which American power has historically been amplified and sustained across regions and crises.
Credibility, often treated as an abstract concept, functions in practice as a form of strategic capital. It shapes how threats are perceived, how assurances are received, and how coalitions are built. The Iran war is steadily depleting that capital—not because the United States is losing power in the traditional sense, but because it is demonstrating inconsistency between rhetoric and results, and between commitments and actions.
This distinction matters. A state can remain materially dominant while becoming politically and strategically constrained. In such a scenario, rivals need not surpass the United States; they need only exploit its self-inflicted limitations, inconsistencies, and strategic overreach in key arenas of competition.
The unfolding situation presents a paradox. The United States is likely to emerge from the Iran war still occupying the top tier of the global power hierarchy. Its economy will remain vast, its military formidable, and its demographic base comparatively stable when measured against other major powers.
And yet, it may find itself less able to shape outcomes, less able to rally allies, and increasingly reliant on costly unilateral action to achieve limited objectives. The architecture of American power will stand, but its usability will be diminished in practice.
The debate sparked on The Bottom Line ultimately underscores a critical distinction often overlooked in public discourse: losing a war is not the same as losing power, but it can mark the beginning of losing influence in ways that are harder to reverse.
The Iran war is unlikely to end American primacy. But it may well redefine how that primacy is exercised, constrained, and perceived across the international system. For a superpower, that difference is everything, shaping the limits of American leadership for years to come.
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The opinions and views expressed in this article are the author’s own and do not necessarily reflect the opinion of Kana’an’s Editorial Board.