In his monumental work, The History of the Decline and Fall of the Roman Empire, the historian Edward Gibbon argued that great powers rarely collapse in a sudden dramatic moment. Instead, empires typically weaken through slow, cumulative shifts in political legitimacy, economic foundations and strategic credibility. Yet history occasionally produces decisive turning points—moments when a single miscalculation accelerates a longer process already underway.
In early 2026, the joint United States–Israeli strike on Iran has triggered precisely such a debate among diplomats, historians and policy analysts. Armed conflict in West Asia has been a recurring feature of international politics for decades. But the February 2026 military operation, targeting Iranian facilities and strategic infrastructure, may carry consequences that extend far beyond the battlefield.
Some observers have drawn comparisons to one of the most consequential geopolitical crises of the twentieth century: the Suez Crisis of 1956. At that time, Britain and France attempted to regain control of the Suez Canal after Egyptian leader Gamal Abdel Nasser nationalized the strategic waterway. Although the invasion achieved initial military success, it quickly collapsed under political pressure—most significantly from the United States itself.
The crisis revealed that Britain could no longer act as an independent imperial power and marked the symbolic end of the country’s global dominance. Today, some analysts believe the strike on Iran could represent a comparable geopolitical inflection point, raising questions about the durability of American leadership in the international system.
For more than seven decades following the end of World War II, the United States served as the central pillar of the global order. Its influence rested not only on military superiority but also on the institutions, economic rules and security arrangements that structured international politics.
The system created in the aftermath of the war included financial institutions such as the International Monetary Fund and the World Bank, as well as security alliances including the North Atlantic Treaty Organization. Together, these institutions helped anchor a global order that promoted economic growth, international trade and relative geopolitical stability.
Many countries—including emerging powers—expanded economically within this framework. The rapid industrial rise of China and the reintegration of Russia into global markets after the Cold War both occurred within an economic architecture shaped largely by American leadership.
The legitimacy of U.S. dominance therefore rested on more than power alone. It depended on the perception that the system Washington helped build produced shared economic benefits and predictable rules for global interaction.
Few regions illustrated the strategic importance of this order more clearly than West Asia.
West Asia—often referred to as the Middle East—has long been one of the most volatile regions in international politics. Since the establishment of Israel in 1948, the region has experienced repeated wars, political upheavals and shifting alliances among states and non-state actors.
Yet the region also holds immense economic importance. Vast oil reserves across the Persian Gulf supply a significant portion of the world’s energy needs. As a result, stability in the region has long been critical to the functioning of the global economy.
To manage this complex strategic environment, the United States gradually developed a security and energy framework that became central to its global influence. Beginning in the 1970s, Washington established close security partnerships with Gulf monarchies such as Saudi Arabia, Qatar and the United Arab Emirates.
These arrangements were not purely military. They formed part of a broader geopolitical bargain that linked security guarantees with the international financial system.
One of the most important pillars of American global influence emerged from energy markets. Gulf states agreed to price and trade oil primarily in U.S. dollars—a practice widely known as the petrodollar system.
Although not a formal treaty, the arrangement reinforced the central role of the U.S. currency in global finance. Oil-importing nations needed dollars to purchase energy supplies, which in turn increased global demand for U.S. financial assets.
In exchange, Washington provided security guarantees and military protection for Gulf governments in a region marked by persistent rivalry and political instability.
Over time, this strategic bargain strengthened both sides. Gulf economies expanded rapidly through oil revenues, while the United States consolidated its position as the dominant external power shaping regional security.
The only major regional power outside this system was Iran.
Following the Iranian Revolution of 1979, relations between Tehran and Washington deteriorated dramatically. The overthrow of the U.S.-backed Shah and the rise of the Islamic Republic transformed Iran from a strategic partner into one of America’s most persistent geopolitical rivals.
Since then, Tehran has sought to challenge U.S. influence across the region. It has cultivated alliances with non-state actors and militant groups, including Hezbollah in Lebanon, Hamas in Gaza and the Houthi movement in Yemen.
These networks have allowed Iran to project influence far beyond its borders while complicating the strategic calculations of both Israel and the Gulf monarchies.
For decades, American strategy in West Asia rested on three interconnected pillars: containing Iran, maintaining the petrodollar system and guaranteeing the security of Gulf partners.
The February 2026 strike, however, may have exposed weaknesses in each of these pillars.
The joint operation by the United States and Israel reportedly targeted Iranian military facilities, missile infrastructure and strategic installations. While the attack demonstrated the continued technological superiority of American and Israeli military capabilities, it also triggered immediate geopolitical repercussions.
One of the most controversial aspects of the operation concerns its diplomatic context. Reports indicate that negotiations between Washington and Tehran were underway in Oman at the time the first strikes were launched.
Launching military operations while diplomatic talks are ongoing carries serious implications for international credibility. Even among adversaries, diplomacy depends on a basic expectation that negotiations are conducted in good faith.
If one side perceives that talks can be used merely as a strategic distraction before military action, trust in future negotiations may erode significantly.
The legality of the operation has also been widely debated. Critics argue that the strike lacked formal authorization from the United States Congress and did not receive approval from the United Nations Security Council.
In international politics, the use of force outside recognized legal frameworks often generates controversy. The post-war international order was built on principles—at least in theory—designed to regulate military intervention and prevent unilateral escalation.
When major powers bypass these mechanisms, it raises broader questions about the consistency of the rules governing global security.
For the United States, which has long positioned itself as a defender of the rules-based order, the perception of inconsistency could weaken the legitimacy of its leadership.
The regional consequences of the strike have been immediate and complex.
Iran responded with retaliatory actions targeting strategic sites linked to Gulf states and U.S. military facilities in the region. Although the scale of the retaliation has remained limited compared with a full-scale regional war, the attacks exposed the vulnerability of critical infrastructure.
For Gulf governments, the episode raises a fundamental strategic question: if the United States cannot prevent regional escalation, can it still serve as a reliable security guarantor?
These concerns have been emerging gradually over the past decade.
In recent years, Gulf monarchies have quietly diversified their diplomatic and economic relationships. While security cooperation with Washington remains central, these states have also expanded ties with other major powers.
Among them, China has become the most significant new partner.
Through infrastructure investment, technology cooperation and long-term energy agreements, Beijing has steadily expanded its economic presence in West Asia. Chinese companies are now deeply involved in ports, telecommunications networks and industrial projects across the Gulf.
The diplomatic influence of China has also begun to grow.
In 2023, Beijing facilitated a historic agreement restoring diplomatic relations between Saudi Arabia and Iran—an arrangement that surprised many observers accustomed to seeing Washington as the region’s primary mediator.
This development suggested that alternative diplomatic centers are emerging in a region long dominated by American influence.
Beyond regional politics, the potential economic consequences of escalating tensions are profound.
One of the most critical vulnerabilities lies in the Strait of Hormuz, a narrow maritime corridor through which roughly one-fifth of the world’s oil shipments pass.
Any disruption to shipping in this waterway could trigger dramatic increases in global energy prices. Analysts warn that oil prices exceeding $100 per barrel could generate inflationary pressures across both developed and emerging economies.
Energy shocks have historically produced wide-ranging economic consequences, from slowing economic growth to destabilizing financial markets.
Given the fragile state of the global economy following years of geopolitical tensions and supply chain disruptions, another major energy crisis could amplify existing economic uncertainties.
The broader issue raised by the 2026 strike is not merely regional instability. It concerns the durability of the international order that has prevailed since World War II.
For decades, the U.S.-led system functioned partly because it appeared to deliver stability and economic opportunity. Many countries accepted American leadership because the system seemed beneficial—even when Washington’s policies were controversial.
However, if the United States increasingly appears to generate instability rather than manage it, perceptions of leadership legitimacy may gradually erode.
This shift is already visible in the growing interest among developing nations in diversifying financial and economic arrangements.
Within the grouping known as BRICS—which includes Brazil, Russia, India, China and South Africa—discussions have intensified about reducing reliance on U.S.-dominated financial systems.
While such initiatives remain limited in practical terms, they reflect a broader search for alternatives to the existing global order.
Despite these challenges, it would be premature to declare the end of American global leadership.
The United States still possesses unmatched military capabilities, extensive alliance networks and enormous technological influence. Its financial system remains deeply embedded in global markets, and the U.S. dollar continues to function as the world’s dominant reserve currency.
Moreover, the global economy remains heavily interconnected with American institutions, corporations and research ecosystems.
History shows that hegemonic systems rarely collapse overnight. Instead, they evolve gradually as competing powers rise and new political arrangements emerge.
The debate surrounding the February 2026 strike on Iran reflects precisely this uncertainty.
For some analysts, the episode represents a temporary crisis within a system that remains fundamentally resilient. For others, it may signal the beginning of a deeper transformation in global power structures.
If confidence in U.S. security guarantees continues to weaken in regions that once anchored American influence, the international system may gradually shift toward a more multipolar configuration.
In such a world, regional powers, emerging economies and new diplomatic coalitions would play a greater role in shaping global politics.
The parallels with the Suez Crisis remain instructive. In 1956, Britain and France still possessed formidable military capabilities. Yet the political outcome of the crisis demonstrated that global power had already shifted.
Their inability to sustain the operation without American support revealed that the center of the international system had moved decisively across the Atlantic.
The United States now faces its own test of strategic adaptability.
Whether the events of 2026 ultimately prove to be a turning point remains uncertain. International systems rarely change because of a single event alone. Instead, transformations occur when structural trends converge with moments of strategic overreach.
For the United States, the challenge will be to adapt its leadership to a world that is becoming increasingly complex and multipolar.
Failure to do so could accelerate the slow erosion of the global order that Washington itself helped create.
As Edward Gibbon observed in his history of the Roman Empire, the decline of great powers rarely begins with dramatic collapse. It begins with subtle shifts in confidence, legitimacy and strategic judgment.
