Brent Crude reached $109.30 on Saturday 16 May, up $3.30 from the post-summit close of $106.00 on Thursday 14 May and above the $107.77 ceiling registered on Tuesday 12 May1. The benchmark has reversed every Trump-Xi summit-optimism correction since the verbal outputs of last week. UK forecourts now translate the wholesale move into roughly £1.75 to £1.85 per litre at the pump.
The White House presidential-actions index recorded zero Iran instruments through Day 78, and the War Powers Act timer Murkowski has cited stood at Day 78 of 60 in arrears. Aramco CEO Amin Nasser warned on Tuesday 12 May that global oil normalisation slips to 2027 if the blockade extends past mid-June. The IEA May report showed a 246-million-barrel inventory draw in eight weeks, the largest sustained drawdown since the 1979 oil crisis.
The physical Iranian crude premium collapsed from over $30 per barrel above Brent in early April to near-parity by mid-May2, an effective $30 unwind in six weeks. Dark-fleet logistics absorbed Iranian supply faster than Western analysts modelled. Brent is now pricing residual escalation risk, not actual supply loss; the underlying barrels still reach refineries through the bilateral channel codified by Tehran.
Counter-perspective: a sustained Brent rally without a corresponding physical-market squeeze is the classic profile of a paper-market dislocation that mean-reverts when the next round of summit diplomacy delivers verbal de-escalation. The 1973 and 2008 precedents both show benchmark spreads above $20 sustained for under 90 days before retracing. The blockade itself reaches Day 78 on Saturday 16 May, making the next four weeks the empirical test of whether this episode breaks that pattern.
