US public approval of the war with Iran fell to its lowest level since the conflict's early days, helping to hold Trump's popularity at a record low, via Reuters/Ipsos poll

• 31% of Americans support US military action against Iran, down from 37% in a March Reuters/Ipsos poll and 34% earlier this month.

Opinion polling on a sitting president's foreign policy is a slow-moving input for markets rather than a tradable event; its historical significance lies in what declining domestic support does to the policy calculus rather than in any direct price channel. In past episodes of unpopular military engagement, weakening approval has tended to raise the political cost of escalation and shorten the runway for sustained operations, which over time feeds into how crude traders price the geopolitical risk premium embedded in benchmarks. The distinction worth drawing is between approval as a constraint and approval as a catalyst: low numbers have historically mattered most when they coincide with an election calendar, since that is when they begin to shape decision-making on strikes, negotiations, or drawdowns. The figures cited here move only modestly between polls, and single-survey shifts of this size are normally within noise, so the durable signal is the trend across successive readings rather than any one print. The follow-ons worth noting are whether the administration's rhetoric and force posture track the polling, and whether the crude curve and shipping insurance costs begin to reflect de-escalation expectations or continued tension. As a data point it colours the political backdrop for Iran policy; it does not by itself move the dollar, crude, or risk assets.