US-Iran Nuclear Talks: Cautious Progress Masks Deep Divisions on Missiles and Regional Influence

Current Situation: Limited Progress Amid Strategic Posturing

The second round of US-Iran indirect nuclear negotiations concluded on February 17, 2026, in Geneva after approximately four hours of discussions. With Oman serving as mediator, the talks marked a continuation of the diplomatic process that began in Muscat. According to multiple reports (Articles 1-6), all parties characterize the negotiations as showing "tangible progress," yet significant gaps remain between the two sides. Iranian Foreign Minister Araghchi announced that both parties reached "general consensus on a series of guiding principles" and that the "negotiation prospects are clearer than before." The discussions focused primarily on nuclear issues and sanctions relief—the traditional core of US-Iran nuclear diplomacy. US Vice President Vance acknowledged the talks were "progressing well in some respects" but notably added that Iran has not accepted certain Trump administration "red lines." Oman's Foreign Minister Badr characterized the progress as "good" while emphasizing "substantial work remains."

The Elephant in the Room: Missiles and Regional Proxies

What's most revealing is what wasn't discussed—or at least what wasn't publicly acknowledged. Articles 1, 3, and 4 note that contentious issues like "limiting Iran's ballistic missile capabilities" and "stopping support for regional proxy forces"—demands previously raised by the US and Israel—were conspicuously absent from official statements. VP Vance's vague reference to Iran not accepting Trump's "red lines" suggests these issues remain unresolved sticking points. Supreme Leader Khamenei's firm statement on February 17 underscores Iran's position: Iran's weapons affairs and peaceful nuclear programs are "none of America's business," and US interference on missile types and ranges is "unreasonable." This unambiguous rejection of missile restrictions signals a fundamental red line that could derail negotiations.

Military Posturing: The Shadow Negotiations

Parallel to diplomatic progress, both sides engaged in significant military demonstrations. The US deployed a second aircraft carrier and 18 F-35A fighters to the Middle East just before talks began, while Iran's Revolutionary Guard Navy conducted exercises in the Strait of Hormuz on February 16. This "negotiation below the negotiation table" reflects mutual distrust and serves multiple purposes: demonstrating resolve to domestic audiences, maintaining leverage, and preparing for potential conflict if diplomacy fails.

Key Trends and Signals

**Positive Indicators:** - Agreement on "guiding principles" suggests framework alignment on nuclear and sanctions issues - Iran's willingness to stay "days or weeks" in Geneva shows commitment - Third round of talks anticipated, indicating momentum - Constructive atmosphere reported by all parties - Iran promises detailed proposals within two weeks **Warning Signs:** - Strategic ambiguity on missile and regional issues - Continued military buildup during negotiations - Khamenei's hardline stance on missile sovereignty - Vance's reference to "other options" beyond diplomacy - Israeli influence pushing for comprehensive deal including missiles

Predictions: What Happens Next

### Short-Term (2-4 Weeks): Iran Presents Comprehensive Proposal According to Article 3, US officials stated Iran will submit detailed proposals within two weeks to bridge differences. This document will likely offer nuclear concessions in exchange for sanctions relief while firmly rejecting missile restrictions. The proposal will test whether the US is willing to accept a limited nuclear-focused deal or insists on a comprehensive agreement including missiles and regional activities. ### Medium-Term (1-2 Months): Third Round Faces Critical Test The third round of negotiations will likely reveal whether the "guiding principles" can accommodate fundamentally different visions. Iran wants a return to something resembling the 2015 JCPOA framework (nuclear restrictions for sanctions relief), while the Trump administration seeks JCPOA-plus (adding missiles and regional constraints). The gap may prove unbridgeable. ### Increasing Probability: Partial Interim Agreement Given the fundamental disagreements, a face-saving interim deal becomes increasingly likely—perhaps freezing Iran's uranium enrichment at current levels in exchange for limited sanctions relief, while postponing contentious missile and regional issues. This would allow both sides to claim diplomatic victory while kicking harder problems down the road. ### Risk Factor: External Spoilers Israel's concerns about Iran's missile capabilities and regional activities may prompt unilateral action if it perceives the US accepting an insufficiently comprehensive deal. The military posturing by both sides also raises the risk of miscalculation or incidents that could derail diplomacy.

Conclusion: Fragile Momentum

The Geneva talks represent genuine diplomatic progress on nuclear technical issues, but fundamental strategic disagreements remain unresolved. Iran's firm rejection of missile restrictions, combined with Trump administration "red lines" and continued military posturing, suggests negotiations are approaching a critical decision point. Within the next 4-8 weeks, both sides must decide whether to accept a limited nuclear deal, continue pursuing an elusive comprehensive agreement, or allow diplomacy to collapse amid renewed confrontation. The involvement of mediators like Oman and the public optimism suggest both sides prefer avoiding immediate conflict, but the substantive gaps may ultimately prove insurmountable without significant political concessions neither side appears ready to make.