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US-Iran Nuclear Talks: Key Obstacles to a Final Deal

Diplomatic progress between Washington and Tehran faces deep structural hurdles. Here's what could derail a lasting agreement.

Negotiations between the United States and Iran over Tehran's nuclear program have regained momentum, but seasoned observers warn that the distance between a preliminary framework and a durable, enforceable agreement remains substantial. The two sides carry decades of mutual distrust into every session, and that history shapes how each interprets even modest concessions from the other.

One of the central sticking points is the question of verification. Iran has historically resisted the kind of intrusive, snap inspections that American negotiators and international monitors consider essential to confirming compliance. Without a robust verification architecture, any deal is likely to face fierce opposition in Washington, where skeptics on both sides of the aisle have long argued that Tehran cannot be trusted to self-report accurately.

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Enrichment levels and the fate of Iran's existing stockpile of highly enriched uranium present another formidable barrier. The United States wants meaningful caps on enrichment activity and a dramatic reduction in Iran's uranium reserves. Tehran, meanwhile, frames its nuclear infrastructure as a sovereign right and a domestic political asset — one that its leadership cannot easily surrender without appearing to capitulate to foreign pressure.

Sanctions relief is the other side of that equation. Iran's government needs to show its population tangible economic dividends to justify any agreement politically. But the architecture of U.S. sanctions — spanning executive orders, congressional statutes, and multilateral measures — means that relief is difficult to deliver quickly and even harder to guarantee against future reversal, especially given Washington's track record of withdrawing from the 2015 Joint Comprehensive Plan of Action.

Underpinning all of these technical disputes is a broader strategic question: whether both governments possess the domestic political will to absorb the compromises a final deal would require. Hardliners in Tehran and skeptics in Washington each have powerful incentives to block an agreement, making the diplomatic window narrow and the margin for error razor-thin. Continue reading at Reuters.

Continue reading at Reuters →

Frequently Asked Questions

Q.What is the biggest obstacle to a US-Iran nuclear deal?

Verification remains one of the central sticking points, as Iran has resisted the intrusive inspections that American negotiators and international monitors consider essential. Enrichment caps and sanctions relief are also major barriers.

Q.Why is sanctions relief so difficult to guarantee for Iran?

U.S. sanctions span executive orders, congressional statutes, and multilateral measures, making relief hard to deliver quickly. Washington's 2015 withdrawal from the JCPOA also makes Iran skeptical that any relief would be permanent.

Q.How does domestic politics affect the chances of a US-Iran agreement?

Hardliners in Tehran and skeptics in Washington both have strong incentives to block a deal, narrowing the diplomatic window. Each government must be able to sell the compromises required to its own political base.

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