Donald Trump told Benjamin Netanyahu on Tuesday 9 June: "Bibi, you better be careful, or you will be on your own very soon" 1. The warning, given in an interview with Axios (a US digital news outlet), was the first time the US President aimed a public threat at Israel rather than at Tehran in 102 days of war.
The rebuke followed a deed Trump had asked Israel not to commit. A day earlier, on Monday 8 June, the Israel Defense Forces (IDF, Israel's military) struck inside Iran despite Trump's public request to Netanyahu not to retaliate for an IRGC missile salvo on Ramat David airbase . That strike hit the Karun Petrochemical Company at the Mahshahr Petrochemical Complex in Khuzestan, a plant that makes toluene diisocyanate and methylene diphenyl diisocyanate (TDI and MDI, polyurethane binders) and nitric acid, the chemical precursors that feed solid-fuel missile production. Iranian state media reported 14 wounded at the plant and one in Tehran, with no deaths 2.
Israel widened the war by choosing that target. The plant's parent, PGPIC (Persian Gulf Petrochemical Industries Company), has sat under US sanctions since 2019 for funding the IRGC, but it was the IDF's June targeting rationale, not the old US listing, that named the missile-precursor chemistry. By hitting the chemistry that builds missiles rather than the launchers that fire them, Israel moved from interdicting fielded weapons to degrading the industrial pipeline behind them, and it did so over an explicit American request for restraint.
Trump answered the strike with a warning rather than an order. A presidential rebuke still carries weight Tehran can read, and Israel did pause its Iran operations within hours of the exchange. The restraint argument cuts the other way too. The gap between Trump's request and the Monday strike removes Washington's claim that it can deliver Israeli restraint at the table, the one card it most needs against Tehran.
