U.S. and Iran Enter Second Day of Nuclear Talks in Geneva With Cautious Optimism

GENEVA — Negotiators from the United States and Iran entered a second day of nuclear talks in Geneva on Thursday, with both sides expressing cautious optimism even as deep disagreements over monitoring mechanisms remained unresolved, according to senior diplomats briefed on the discussions.

The talks, hosted by the European Union’s foreign policy chief, represent the most substantive engagement between Washington and Tehran since the collapse of the original 2015 nuclear agreement. The United States delegation, led by a senior State Department official, presented what officials described as a “comprehensive proposal” covering uranium enrichment limits, snapback sanctions mechanisms, and international atomic energy inspections.

What the U.S. Proposal Entails

Three officials familiar with the American position told reporters that the U.S. offer includes a cap on Iran’s enrichment at 3.67 percent — the level permitted under the 2015 Joint Comprehensive Plan of Action — in exchange for the phased lifting of oil and financial sanctions. The proposal also demands that Iran grant inspectors from the International Atomic Energy Agency continuous access to its nuclear sites, a provision that proved to be the central sticking point in previous negotiations.

“We have put forward a serious, detailed framework that addresses the core concerns on all sides,” the U.S. lead negotiator said in a statement issued after the opening session. “The path to a verifiable, lasting agreement exists, but it requires genuine political will from Tehran.”

The Iranian delegation, which includes officials from the Islamic Republic’s Foreign Ministry and its Atomic Energy Organization, has yet to formally respond to the American proposal. However, Iran’s top negotiator signaled openness to discussing enrichment limits while firmly rejecting any provision that would allow inspectors unrestricted access to military-linked facilities.

Iran’s Red Lines and Domestic Constraints

Iran’s supreme leader, Ayatollah Ali Khamenei, reiterated in a televised address that Iran would not accept “humiliating” demands, language that diplomats said was aimed at a domestic audience wary of appearing to capitulate to Western pressure. The statement underscored the political constraints facing the Iranian negotiating team, which must balance international engagement with hardline opposition at home.

“Iran’s participation in these talks reflects a strategic calculation, not a change of heart,” one Western diplomat said. “The regime is under significant economic pressure, but it also cannot afford to be seen as yielding to American demands.”

The talks occur against a backdrop of heightened regional tensions. Israel has publicly opposed any arrangement that would leave Iran with a residual enrichment capability, while Gulf states have called for strict verification mechanisms. The IAEA has reported in recent months that Iran’s stockpile of enriched uranium continues to grow, adding urgency to the diplomatic effort.

Next Steps and International Reactions

EU officials said another round of talks is expected within two weeks, with technical working groups convening in Vienna to hash out the details of a potential monitoring regime. China and Russia, both parties to the original nuclear deal, have expressed support for the talks while calling on the United States to ease sanctions as a confidence-building measure.

The Biden administration, which revived the nuclear talks shortly after taking office, faces a narrowing window to secure a deal before upcoming midterm elections that could shift the political calculus in Washington. Republican lawmakers have already criticized the diplomatic engagement, arguing that Iran cannot be trusted and that sanctions should be tightened rather than lifted.

“The American people deserve an Iran policy that prevents a nuclear weapon without rewarding bad behavior,” one senator said in a statement. “Any agreement that leaves Iran one breakthrough away from a bomb is a bad deal.”

Global markets reacted cautiously to the news of the talks, with oil prices holding steady as investors awaited clarity on the outcome. Energy analysts said a successful deal could ease concerns about supply disruptions in the Persian Gulf region, while a collapse of negotiations could reignite tensions that drive crude prices higher.

Negotiators on all sides acknowledged that bridging the remaining gaps will require difficult compromises. The IAEA’s director-general offered to play a direct role in any future monitoring arrangement, a proposal that received tentative support from both Washington and Tehran — the most concrete signal yet that a framework, if not a final agreement, may be within reach. International observers are watching closely for any signs of a breakthrough.