The US-Israel vs. Iran was only several weeks old. But already, it has exposed a familiar paradox in modern conflict: wars can be short, yet their consequences can endure. 

Since February 28, when US and Israeli forces launched coordinated strikes that killed Iran’s Supreme Leader and triggered retaliatory attacks across the region, the conflict has escalated into a multi-domain confrontation spanning air, sea, cyber, and energy systems (Council on Foreign Relations). Oil flowed through the Strait of Hormuz–a chokepoint for roughly a fifth of global supply–has been disrupted, sending prices surging and markets reeling.

Yet the central question remains unresolved: How long will this war last? 

A War already longer than expected

Initial expectations of a rapid campaign have faded. Early projections of a two-to-four-week conflict have given way to more cautious assessments as the fighting enters its third week, with military planners now anticipating “several more weeks” at minimum (New York Post).

Despite heavy losses–including the destruction of a majority of Iran’s missile launchers–the Iranian state has not collapsed. Instead, intelligence assessments indicate that the regime has consolidated power internally, hardening rather than fragmenting under pressure (The Washington Post).

This resilience matters. In conflict research, wars tend to end quickly only when one side collapses or concedes. When regimes endure, conflicts often lengthen.

What the academic literature says about war duration

Decades of research in conflict studies suggest that war duration is driven less by battlefield outcomes than by political incentives.

Scholars such as James Fearon argue that war persists when three conditions are present: uncertainty about outcomes, lack of credible commitments, and high stakes–particularly regime survival. The current conflict appears to meet all three.

Recent strategic analyses reinforce this view. Experts note that Iran is pursuing a strategy of endurance, leveraging asymmetric tools such as missile strikes, proxy forces, and energy disruption to offset conventional military disadvantage (Atlantic Council). Meanwhile, US and Israeli objectives– weakening Iran’s military and preventing nuclear capability– are not easily achieved quickly.

The result is what analysts describe as a “limited interstate war with asymmetric escalation.”

Historically, conflicts of this type tend to last several months rather than weeks.

A Probabilistic Forecast: Months, not weeks

Drawing on comparative conflict data and current battlefield conditions, a reasonable estimate places the most likely duration in a two-to-six-month range.

Short wars — under two months —usually require either a rapid regime collapse or a decisive victory. THat appears unlikely. Iranian leadership structures remain intact, and no credible political settlement is yet in sight.

At the same time, the conflict has not yet escalated into a full regional ground war, which would extend the timeline to years.

The most probable scenario, therefore, is a contained but prolonged campaign of strikes, counterstrikes, and economic pressure stretching into mid-2026.

Why THis War May not End cleanly

Even if active fighting subsides within months, the conflict’s underlying dynamics suggest a less decisive ending.

Analysts warn that the war lacks a clear political end state. Israeli and U.S. strategy has focused on degrading Iran’s capabilities rather than establishing a postwar settlement. Meanwhile, the Iranian leadership has strong incentives to continue resistance, particularly as survival becomes tied to defiance (The Guardian).

This mismatch–between military action and political resolution–is a classic driver of prolonged conflict.

The Deeper Story: economic shock without invasion

If the war follows historical patterns, its military phase may end within months. But its economic consequences will likely endure far longer.

Research on geopolitical shocks shows that conflict can permanently reshape economic expectations, raising borrowing costs and depressing investment even after violence subsidies (arXiv). In Iran’s case, sustained confrontation with the West has already produced long-term declines in growth, trade integration, and institutional stability–effects comparable to those seen in civil war environments.

The current conflict is amplifying those dynamics globally.

Oil prices have surged about $100 per barrel, markets have become volatile, and suppl chains have been disrupted. Even if shipping lanes reopen quickly, economists warn that inflation, investment uncertainty, and financial tightening could persist for years (Financial Times).

What History suggests comes next

Modern wars rarely end with clear victories. Instead, they fade through negotiation, exhaustion or shifting priorities.

The Gulf War ended in months, but only after overwhelming military dominance. By contrast, conflicts involving resilient states and asymmetric strategies–from Lebanon in 2006 to ongoing wars in Ukraine– have tended to last longer and produce ambiguous outcomes.

The current war sits between those extremes.

The most likely outcome is not a decisive victory, but a gradual de-escalation after months of attrition.

The Bottom Line

Based on current evidence and decades of conflict research:

• The war is unlikely to end within weeks
• The most probable duration is 2-6 months
• A longer conflict–extending into 2027– remains possible if escalation continues

But the more important conclusion is this:

“Even if the war ends this year, its economic consequences will not.”

In modern warfare, the battlefield may fall silent long before the shockwaves stop spreading.