The UK Maritime Trade Operations Centre confirmed Monday that a vessel was struck by unknown projectiles in the Strait of Hormuz, hours after President Trump announced the U.S. would begin guiding ships through the waterway with military support. The word “unknown” is doing significant work in that sentence. In a strait where Iranian forces have been operating against commercial shipping, where the U.S. military has active minesweeping operations underway, and where the IRGC has demonstrated both the capability and the willingness to attack vessels under ambiguous conditions, “unknown” does not mean the intelligence community has no candidates. It means the attribution has not reached the threshold for public declaration.

Iran’s latest peace proposal — which defers nuclear negotiations entirely and offers only to reopen the Strait of Hormuz in exchange for a U.S. blockade lift and a permanent truce — was rejected by Trump over the weekend. Iran’s foreign minister called it aimed at “the permanent end” of the war. Trump said he could not imagine it being acceptable. Pakistan, which has served as the mediating channel throughout, has stood down its security apparatus in Islamabad, signaling that no talks are imminent. The stalemate is public. What matters for intelligence analysis is what the stalemate reveals about the Iranian decision-making structure.

As of Monday, the United States announced it would begin guiding ships through the Strait of Hormuz with the support of guided-missile destroyers, more than 100 aircraft, and 15,000 service members. A tanker was struck by unknown projectiles in the strait within hours of the announcement. The dual blockade — the U.S. Navy preventing access to Iranian ports while Iran restricts commercial shipping through the strait — has now entered a phase where each side is testing the other’s escalation threshold in a waterway that carries roughly one-fifth of daily global oil production.

Iran’s Islamic Revolutionary Guard Corps has claimed responsibility for missile and drone strikes on two major aluminum producers in the Gulf — Emirates Global Aluminium (EMAL) in Abu Dhabi and Aluminium Bahrain (Alba) — framing the attacks as retaliation for earlier strikes on Iranian steel facilities.

The IRGC alleged, without elaboration, that both companies had ties to U.S. military and aeronautics firms. EGA’s Al Taweelah site sustained significant damage, with six people injured by debris from intercepted missiles. Alba reported two employees with mild injuries and said it was still assessing the extent of the damage.