Israeli Prime Minister Benjamin Netanyahu disclosed on Monday that Vice President JD Vance confirmed to him that removing enriched materials from Iran and ensuring no further uranium enrichment is a fundamental issue in any agreement with Tehran, following a phone call between the two leaders on Sunday after Vance’s departure from Islamabad where the US-Iran talks collapsed over the weekend.
Netanyahu also confirmed that Israel supports Trump’s proposed blockade on Iran, completing a picture of full alignment between Washington and Jerusalem on the post-ceasefire escalation strategy even as the rest of the international community, including France, Germany, the UK, Canada, Australia, and the EU, pushes in the opposite direction.
The uranium enrichment disclosure is the most substantive public statement yet about what the United States actually requires from Iran in any final agreement, and it confirms that the Islamabad talks failed precisely because this gap is unbridgeable in the current negotiating environment. Iran has consistently stated that uranium enrichment is a sovereign right it will not surrender. The US, as now confirmed by Vance to Netanyahu, regards the removal of enriched materials and a halt to enrichment as a fundamental non-negotiable requirement. There is no middle ground between those two positions that a two-week ceasefire and a Pakistan-mediated process was ever realistically going to bridge.
The sequence of Netanyahu’s Sunday and Monday statements tells a coherent and alarming story. Netanyahu spoke with Vance on Sunday after the Vice President left Islamabad with the talks having broken down. Vance confirmed to Netanyahu that enrichment is a fundamental issue. Netanyahu then publicly confirmed Israel supports Trump’s Iran blockade. And on Monday, Israeli forces struck southern Lebanon with airstrikes, phosphorus shells, and artillery, killing five people, while claiming imminent full operational control of Bint Jbeil and reporting the killing of fighters leaving a hospital in the town.
The coordination between Washington and Jerusalem on the post-Islamabad strategy is now fully visible. The US proposes a naval blockade of Tehran-linked ships. Israel supports it. The US confirms uranium enrichment as the fundamental deal-breaking issue. Israel endorses that position. Israel continues its Lebanon campaign with American approval. The ceasefire that Trump announced on April 8 as a total and complete victory has been replaced within five days by a blockade proposal, an enrichment ultimatum, and Israeli forces closing in on a southern Lebanese town.
For Iran, the Vance-Netanyahu enrichment confirmation removes any ambiguity about what the United States is actually asking for. Tehran entered the Islamabad talks with a 10-point proposal that included a compromise on enrichment levels rather than the abandonment of the programme. The US position, as now confirmed at the vice-presidential level to the Israeli prime minister, is that compromise is insufficient. Iran must remove its enriched materials and stop enriching uranium entirely. That is not a negotiating position that Iran’s domestic political and institutional constraints allow its government to accept publicly, regardless of what private diplomacy might produce.
Iran’s response to Monday’s developments has been correspondingly maximal. The Iranian Armed Forces declared a permanent Hormuz control mechanism. Iran threatened to attack and shut Gulf ports if its shipping routes are blocked. Iranian officials called the US blockade proposal piracy. Brent crude crossed $102 per barrel, up 8.79% on the day.
The gap between where the two sides stand on the single most important substantive issue in any Iran nuclear deal is not a negotiating gap. It is a chasm. And Netanyahu’s disclosure that Vance confirmed enrichment as fundamental, made publicly on the same day as Israeli strikes, Gulf port threats, and a Brent crude spike above $100, is the clearest signal yet that the diplomatic window that briefly opened with the April 8 ceasefire has now closed.
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