Prof Robert Pape

Prof Robert Pape

The World After Iran

Five Questions from Our Live Briefing That May Define the Next Decade

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Prof Robert Pape
Jun 07, 2026
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Just hours before this essay was scheduled to appear, Iran launched missiles at Israel for the first time since the April 8 ceasefire.

The immediate military consequences remain uncertain. But the broader significance is already becoming clear.

For three decades after the 1991 Gulf War, allies and adversaries alike came to believe that American military superiority was so overwhelming that meaningful resistance could raise costs but could not fundamentally alter political outcomes.

The Iran War is revealing something different.

One of the most rewarding parts of our recent live briefing was how quickly the discussion moved beyond day-to-day battlefield developments and toward the larger structural questions raised by that shift.

The presentation itself focused on a simple argument.

The 1991 Gulf War taught the world how power worked.

The Iran War may be teaching the world that those rules are changing.

The discussion that followed centered on five questions:

  • Would the war matter if the United States simply walked away?

  • Is the Iran War creating the Post-American World?

  • Is the old order dying—or merely becoming multipolar?

  • What happens to small states when instability becomes permanent?

  • What is the single most important geopolitical change since 2019?

Those questions may seem unrelated.

They are not.

In many ways they are all versions of the same question:

What kind of world is emerging after the assumptions created by the 1991 Gulf War begin to break down?

Here are my answers —and why they all point toward the same conclusion.

1. Would the Meaning of the War Change if the United States Simply Walked Away?

No. At least not as most people understand it -- US stops current attacks, withdraws some naval forces, but US military bases, most of the prewar 50,000 troops, and air and naval forces remain.

In many ways, a “limited” walking away would reinforce the central lesson already emerging.

The significance of the war does not depend primarily on what Washington does next. It depends on what the war has already demonstrated. For thirty-five years, the operating assumption of world politics was that resistance to American-led coercion could raise costs but could not fundamentally alter outcomes.

The Iran War challenged that assumption.

Iran survived. Hormuz remained contested. Gulf allies hedged. Negotiations increasingly occurred under conditions Washington did not fully control. If the United States now reduces its involvement, the lesson becomes even clearer: overwhelming coercive superiority no longer guarantees political control.

The strategic sequence is straightforward:

Resistance → Denial → Political Survival → Strategic Reassessment

That lesson will travel far beyond Iran.

If that lesson spreads beyond Iran, the consequences extend far beyond the Gulf. They may alter the structure of world politics itself.

That raises the second question: Is the Iran War creating the Post-American World?

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