How to negotiate successfully with current Iranian leaders?
Front-load enough relief to give Khamenei something to defend at home, but sequence each tranche so breaking the deal costs more than keeping it.
Machiavelli and Hirschman agree: structure the agreement so compliance pays and defection costs, not because Iran will act in good faith, but because the incentives leave no better option. Keynes anchors this in Versailles 1919: terms so harsh that no government can survive delivering them will not be delivered. Pezeshkian needs visible gains or he cannot hold any domestic coalition for compliance. Ibn Khaldun adds that maximum pressure since 2025 has not fractured the regime; it has given Khamenei a foreign enemy to rally against, so coercive leverage is weaker than it looks.
Ben-Gurion's objection is real and unresolved. At 60% enrichment, Iran is weeks from weapons-grade material, and any deal that leaves enrichment infrastructure intact is a delay, not a settlement. The council splits here: Ben-Gurion insists verified dismantlement must come before major relief; Keynes and Hirschman argue that demanding it upfront ends the negotiation before it produces anything.
Confidence summary: The council reaches high confidence on structural design principles and moderate confidence on sequencing, where a genuine and unresolved split between security-first and economics-first members prevents a clean verdict.
1. The core argument
The least obvious thing about the Iran nuclear negotiation is that both maximum pressure and maximum concession carry the same structural flaw: both depend on Khamenei making a choice that is politically unsustainable inside the regime. The council's central finding is that the deal's architecture, not its rhetoric and not the personalities across the table, determines whether any agreement holds. Sanctions snapback, sequenced relief tranches, and deepening economic integration are not diplomatic courtesies; they are the mechanism that makes compliance the rational choice year after year, not just on signing day. But this structural logic runs directly into a deadline problem. Iran's enrichment level, confirmed near 60% purity by IAEA assessments, means the window for a sequenced approach may close before the economic dependencies have time to build. The council agrees on the destination and fractures, sharply, on how fast you have to move to get there before the option disappears.
2. How each member frames it
Niccolò Machiavelli treats the negotiation as an engineering problem, not a diplomatic one. Khamenei is a prince who has survived by reading incentive structures correctly; appeal to his goodwill and you will be disappointed, but cage him in a structure where defection triggers automatic, irreversible consequences and you do not need his goodwill. The card stated this clearly, but what it omitted is Machiavelli's secondary argument: the structure must humiliate neither side visibly, because a prince who cannot show his court that he extracted something will sabotage the agreement covertly. Face-saving is not sentiment; it is structural load-bearing.
Ibn Khaldun insists the prior question, before any structure is designed, is the state of the regime's internal cohesion. A dynasty with genuine group solidarity grows stronger under siege; it does not fracture. His reading of maximum pressure since 2025 is that it has reinforced Khamenei's position, not weakened it, because external threat supplies the regime with exactly the foreign enemy that legitimises internal discipline. The card could not fit his harder implication: if pressure has already done its worst and produced 60% enrichment rather than capitulation, negotiators are bargaining from a weaker position than they believe. The leverage they think they hold may be mostly notional.
David Ben-Gurion does not dispute the structural logic. He disputes the timeline on which it can operate. Israel built its own deterrent capability precisely because Ben-Gurion understood that a neighbour's nuclear threshold, once crossed, cannot be managed by economic sequencing after the fact. His position is that the weeks-to-breakout window created by near-60% enrichment makes Hirschman's gradualist architecture a luxury the negotiation cannot afford. Verified dismantlement of enrichment infrastructure must precede, not follow, major relief. The card stated this, but omitted his acknowledged cost: demanding it upfront probably kills the negotiation, and he accepts that risk as preferable to the alternative.
John Maynard Keynes grounds the entire problem in Versailles 1919. The reparations schedule he resigned over was not wrong in principle; it was structurally undeliverable because no German government could survive handing it to its population. The same trap is visible here. Pezeshkian holds reformist rhetoric and limited structural power; he can only sustain a domestic coalition for compliance if the population sees tangible economic gains early. Relief that is too thin, too slow, or too hedged with conditions produces the same collapse as no relief at all, and it collapses not from Iranian bad faith but from political arithmetic that Western negotiators keep failing to price in.
Albert O. Hirschman accepts Keynes's point on relief size and pushes it one level deeper. The durability of any agreement is a function of how much the breaking party stands to lose at the moment they are tempted to defect, not at the moment of signing. Development agreements he observed in Colombia collapsed whenever exit was cheaper than voice. The solution is to sequence relief so that each tranche creates economic linkages, trade relationships, institutional ties, whose destruction in the event of defection costs more than the previous tranche did. Year-three defection must be more expensive than year-one defection. That escalating cost architecture is what transforms a deal from a snapshot into a durable arrangement.
3. Where the council agrees
The most surprising point of agreement is that coercive leverage is probably weaker than Western negotiators assume going in. Ibn Khaldun and Machiavelli reach this from opposite directions, but neither believes pressure alone has softened the regime's calculus; the enrichment record under maximum pressure conditions is the evidence both cite. A second shared point: the deal's terms must be politically survivable inside Iran or they will not survive at all. This is not a concession to Iranian interests; it is a mechanical precondition for compliance. Third, all five members reject the idea that a monitoring-and-trust framework substitutes for structural incentives. Verification matters, but only as a trigger for consequences already embedded in the agreement's architecture. Finally, the council agrees that whatever sequencing is chosen, the first tranche of relief must be conditional on verified, not promised, steps. Good faith is not the mechanism; verified action is.
4. Where the council splits
The real line runs between Ben-Gurion on one side and Keynes and Hirschman on the other, with Machiavelli and Ibn Khaldun watching from a position of structural agnosticism. Ben-Gurion holds that verified dismantlement of enrichment infrastructure must precede major relief, because any agreement that leaves that infrastructure intact is a delay, not a settlement, and delays are not neutral when breakout is weeks away. Keynes and Hirschman hold that demanding dismantlement upfront ends the negotiation before it produces anything, because Khamenei cannot deliver it without a domestic coalition that only tangible relief can build. Both sides have a real argument. Neither is wrong about its own priority; they disagree on which risk is more dangerous: a collapsed negotiation or a delayed dismantlement. That is a value judgment the council cannot resolve.
5. For a policymaker to decide on
The concrete choice is sequencing. Option one: require verified, irreversible dismantlement of enrichment infrastructure as the condition for any major relief tranche, accepting that the negotiation may collapse but preserving the security threshold Ben-Gurion identifies. Option two: begin with meaningful, front-loaded relief conditional on verified enrichment freeze and rollback steps, building economic dependencies that make later dismantlement Iran's rational choice, accepting that the infrastructure remains partially intact during that interval. The policymaker alone can weigh how much time remains before the interval closes.