After the Iran War: The Limits of U.S.-Centered Security in the Middle East
- Seyed Mojtaba Jalalzadeh
- 1 day ago
- 6 min read
In the Middle East, wars do not merely alter the balance of power; they also test the credibility of security arrangements. The Iran war belongs to that category. Even now, it cannot be said with certainty that the war has fully ended. Credible reports point to continuing hostilities, mounting pressure on the Strait of Hormuz, and reciprocal attacks involving Iran, the United States, and Israel. Discussion of the “post-Iran war,” therefore, should not be understood as a description of a settled order, but as an examination of the order that may emerge once the war ends—an order whose contours are already being contested.
In recent years, the Middle East has moved toward neither stable order nor complete chaos. What has instead emerged is a fragile and costly order dependent on external deterrence, with the United States as its principal pillar. Yet the war with Iran has shown that this architecture, though still powerful, can no longer present itself as a durable and low-cost guarantee. From a realist perspective, the issue is not that the United States has disappeared from the region. It is that Washington has shifted from the role of external arbiter to that of a direct party to the conflict, and this shift has weakened the credibility of a U.S.-centered security order.
The war has made the limits of that architecture more visible without producing a coherent alternative. The United States remains the most powerful external actor in the region. Its network of bases, local partners, naval and air assets, and intelligence capabilities remains intact. U.S. Central Command continues to stress integrated air defense, combat readiness, and coordination with regional partners. But the core problem lies elsewhere: superiority in military power does not automatically translate into superiority in order-building.
A security order endures only when at least three conditions are met. First, the principal actors must see the cost of violating the rules as greater than the benefits. Second, the dominant guarantor must be able to impose predictability on both adversaries and allies. Third, deterrence must generate stability rather than perpetually stimulating balancing behavior. The current war has exposed erosion at all three levels.
The United States and Israel have inflicted serious damage on Iran, but even in narratives close to Washington there is concern that Iran may still emerge politically and strategically “un-defeated,” in the sense that survival itself becomes a form of victory. By imposing costs on energy, shipping, and the wider global economy, Iran has sought to shift the battlefield from pure military confrontation to economic attrition.
One of the clearest signs of this erosion is the cost being paid by the Arab states of the Persian Gulf, even though they did not initiate the war. Governments in the Gulf are moving beyond the assumption that the security of their airspace, infrastructure, and energy exports can be entrusted entirely to the American umbrella. The discussion is now about diversification of both external alignments and security partnerships. In realist terms, the meaning is straightforward: alliances remain credible only so long as the cost of dependence is lower than the cost of distancing. When war places ports, flight routes, tourism, and energy infrastructure at risk, regional states seek parallel forms of protection. This is not full strategic distancing from the United States; it is hedging against the instability of the principal guarantor.
At the same time, the nature of threats in the region has changed. Missiles, drones, hybrid warfare, maritime disruption, and proxy networks have increased the cost of intervention and the burden of protecting allies. In such an environment, the United States can still strike, but it is less able to stabilize the rules of the game. Iran, for its part, does not need full military superiority to challenge that order. It only needs to demonstrate that it can keep Hormuz, energy infrastructure, or the psychological economy of the market under constant risk.
This war has therefore revealed not merely the weakness of a specific agreement or coalition, but an internal contradiction in the regional order itself. The Middle East remains heavily dependent on the American security umbrella, yet that same dependence turns the region into a theater for asymmetric retaliation against the United States. American military installations in the Persian Gulf are both an asset and a liability for Arab governments. They are an asset because balancing against Iran would be far more difficult without them. They are a liability because they become natural targets in any retaliatory cycle. In that sense, the architecture that is supposed to reassure partners also increases their exposure.
The Strait of Hormuz is central to this contradiction. Its significance goes far beyond geopolitical symbolism. As one of the world’s key energy chokepoints, it carries a substantial share of global oil and gas flows. Disruption there immediately affects shipping, energy prices, and financial markets. During the war, maritime transportation has been disrupted, markets have experienced turbulence, and regional states have faced missile and drone attacks, including against vital infrastructure. The implication is clear: a U.S.-centered security architecture remains credible only so long as it can keep chokepoints open. When it cannot, it loses one of the main foundations of its legitimacy.
Another important development is that the Arab states of the Persian Gulf are no longer satisfied with the old formula of protection in exchange for compliance. They want to shape postwar arrangements rather than merely adapt to them. Their concern is not simply ending the war, but ensuring that any future arrangement addresses missiles, drones, maritime insecurity, and proxy warfare. In other words, the Gulf wants to be written into whatever architecture comes next. This is not the language of passive clients sheltering under an external umbrella; it is the language of actors demanding a role in defining the future order. Regional security can no longer be engineered solely from the outside.
At the same time, the Gulf states are pursuing two goals simultaneously. They still want continued U.S. military support and the degradation of Iran’s missile capabilities, but they also seek to reduce one-sided dependence and widen their room for maneuver. This does not mean leaving the American orbit. It means bargaining for an order that is less hierarchical and more transactional.
None of this means that a new order has already replaced the U.S.-centered one. That would be premature. China and Russia, despite their diplomatic activity, still lack both America’s regional military network and its capacity to provide immediate guarantees for shipping lanes and air defense. Other diplomatic initiatives may reflect increasing multilayeredness in regional diplomacy, but not the emergence of a true alternative guarantor.
So has the U.S.-centered security architecture failed? The more precise answer is that it has eroded, but not collapsed. No other actor can yet fully replace its core functions. Still, the war has shown that the traditional form of this architecture is no longer sufficient for the new regional security environment. The old model rested on assumptions that are now weaker than before: that air superiority can generate strategic freedom of action, or that Iran can be contained separately from the missile, maritime, and proxy arenas. What is emerging in the Persian Gulf is not the end of America, but the end of its monopoly.
The most likely consequence of the war, therefore, is not peace but renewed balancing. Iran, even if militarily degraded, will have stronger incentives to rely on asymmetric deterrence. The Gulf Arab states will move toward integrated air defense, diversified partnerships, and demands for clearer U.S. guarantees. Israel will seek to institutionalize deeper security ties with parts of the Arab order. The United States will remain central, but less as the unrivaled architect of order than as the crisis manager of an unfinished order. That difference matters. A hegemon is truly hegemonic only when it can shape not just the outcome of war, but the political order that follows it.
The idea that a new regional order can be built solely through U.S. military pressure is therefore misleading. The war has exposed a central contradiction: Washington must escalate force to preserve order, yet that escalation itself increases instability and allied doubt. From a realist perspective, the future Middle East will be neither purely American nor purely regional. It is more likely to be an order built on balancing, hedging, and the recognition that no single power can guarantee regional security on its own.
The likely result is a fragmented and minimal order: temporary arrangements to protect shipping, ad hoc cooperation in air defense, tactical dialogue among regional actors, and attempts to contain crises rather than resolve them at their roots. Even diplomatic signals, temporary passage arrangements in Hormuz, and multilateral consultations suggest that regional actors understand that prolonged attrition guarantees no one’s security. But unless such arrangements rest on a more stable and balanced logic of deterrence, they will look less like a coherent new security architecture and more like managed ceasefires.
This article written by Seyed Mojtaba Jalalzadeh, an international affairs analyst with an M.A. in International Relations. His work focuses on U.S. foreign policy, Middle East security, and regional order.
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