Brent and WTI both firmed modestly through Monday's session as the MOU deadline lapsed without renewal, with the market treating the outcome as expected rather than shock, given weeks of signalling that a deal was unlikely. The pivot in Iranian rhetoric from defensive to fully offensive, alongside the reported UAE tanker seizure, keeps a live risk premium under Brent even as actual flow data shows crude still moving out of the Gulf. Wright's framing that the world does not need Iranian oil right now argues for policymakers tolerating a prolonged embargo without moving to release strategic reserves, a stance traders will read as reducing the odds of near-term supply relief. The Qatar back channel is the one variable that could compress the risk premium quickly if it produces something concrete, but for now the offsetting signals, hardline in Tehran, conciliatory via Doha, leave oil pricing an elevated floor rather than a fresh spike.---Washington and Tehran are both hardening their public posture even as quieter channels, Qatar for Iran and unconfirmed IRGC contacts for the US, keep a narrow path to de-escalation open.Summary:Trump says the US is not seeking an extension of the Iran MOU and does not believe Iran will make the deal he considers necessaryTrump told Iran to "put up the white flag of surrender" and threatened to bomb Oman if it obstructs Hormuz negotiationsTrump claims ongoing back channel contact with the IRGC, a claim the IRGC has deniedA senior Iranian official says Iran has shifted its policy from defensive to fully offensiveIran seized a UAE oil tanker for violations in the Strait of HormuzIran says it maintains separate, ongoing contacts with Qatar aimed at de-escalationEnergy Secretary Chris Wright says Trump has latitude to wait Iran out via sanctions and the oil embargo, arguing the world does not need Iranian crude while Iran currently exports nonePresident Trump has ruled out extending the memorandum of understanding governing US-Iran negotiations, telling reporters he does not believe Tehran is prepared to make the kind of deal he considers necessary. In a Fox News phone interview, Trump said Iran should "put up the white flag of surrender," and separately warned that the US would "bomb the s*** out of" Oman if it interferes with Washington's handling of the Strait of Hormuz. Trump added that he is "not in a hurry" to reach a settlement and that the midterm election calendar has no bearing on his approach, framing the standoff as one Washington can afford to let run.The rhetoric has hardened on both sides. A senior Iranian official said Tehran has moved from a defensive to a fully offensive policy footing, a shift that coincides with a report from Iran's Fars news agency that Iranian forces seized a UAE-flagged oil tanker for violations in the strait. The seizure is the clearest sign yet that Iran intends to back its new posture with enforcement action against shipping it deems noncompliant, rather than relying purely on rhetoric. Trump, for his part, claims the US maintains a back channel to the Islamic Revolutionary Guard Corps, though the IRGC has denied any such contact is taking place, leaving the two sides publicly contradicting each other on whether communication exists at all.Not every signal points toward escalation. Iran says it is pursuing separate, ongoing talks with Qatar focused specifically on de-escalatory measures, running in parallel to the stalled US track and the earlier Oman-mediated discussions on strait transit mechanics. That leaves the diplomatic picture split across two tracks moving in opposite directions: one hardening around Trump's public ultimatums, Iran's offensive pivot, and the disputed IRGC channel, and the other quietly probing for an off-ramp through Doha. How much weight the Qatar contacts carry relative to the public posturing is difficult to gauge from the outside, but the fact that a parallel channel exists at all suggests neither side has fully closed the door on a negotiated outcome.US Energy Secretary Chris Wright used a separate Fox News interview to argue Washington holds the stronger hand regardless of how long talks drag on. Asked whether Trump has room to wait Iran out while sanctions and the oil embargo apply pressure, Wright said the president is "playing the long game," noting that Iran currently cannot export any crude and that global supply does not depend on it. He characterised the current standoff as a straightforward war of attrition on the economic front, one where Iran's inability to monetise its own oil erodes its negotiating position the longer the embargo holds, with no corresponding cost to global supply that would force Washington's hand.Taken together, the administration's public line, Trump's ultimatums, Wright's economic pressure argument, and the absence of any urgency around a deal, points to a US strategy built on patience rather than escalation for now. Whether Iran's offensive pivot and the tanker seizure are the opening moves of a more assertive response, or simply posturing to strengthen its position in the Qatar-mediated track, remains the open question shaping how oil markets price the conflict from here. This article was written by Eamonn Sheridan at investinglive.com.