KEY POINTS
- Brent crude fell to $99.18 per barrel on May 27, dipping below $100 for the first time in weeks after the US and Iran signaled progress on a ceasefire framework that could reopen the Strait of Hormuz.
- Both nations are playing down expectations of an imminent deal, and the US naval blockade of Iranian ports remains in full effect, keeping the supply disruption that has roiled global energy markets since February firmly in place.
- Traders should watch for any formal announcement from negotiators this week and the Friday Baker Hughes rig count for signals on whether US producers are ramping output to fill the gap.
Brent crude fell to $99.18 per barrel on Tuesday, slipping below the psychologically important $100 mark for the first time since early May, as traders parsed conflicting signals from US-Iran ceasefire negotiations. West Texas Intermediate dropped to $93.12. Both benchmarks were down less than 1% on the day, a muted response to what could be the most significant geopolitical de-escalation since the Iran conflict began three months ago.
The decline started Monday when oil dropped 5% to two-week lows after weekend reports that Washington and Tehran had reached a framework agreement. The proposed terms, as reported by CNN, include Iran reopening the Strait of Hormuz in exchange for the US lifting its naval blockade and the release of frozen Iranian assets. Iran has also agreed in principle to dispose of its highly enriched uranium, a concession that would address Washington's nuclear concerns.
The Price of Uncertainty
The framework sounds promising on paper. In practice, oil traders are treating it as a starting point, not a conclusion. Both sides spent the weekend managing expectations. Trump told reporters Sunday that the US would not rush into a deal. Iran's negotiating team echoed the caution, and CNBC reported that neither side could confirm an agreement was imminent. The key sticking points remain the sequencing of actions: who moves first on the blockade versus the Strait, and what verification mechanisms will ensure compliance.
This matters because the supply disruption is enormous. The Strait of Hormuz carries roughly 20% of the world's traded oil. Iran blockaded it in late February at the start of the conflict. The US imposed its own counter-blockade of Iranian ports in mid-April. The result has been a dual chokepoint that has kept Brent above $90 for three straight months and pushed the national average gasoline price to $4.56 per gallon, the highest in four years.
Why $100 Still Matters
Even with Brent briefly below $100, the structural supply deficit has not changed. OPEC+ has been unable to fully compensate for the Iranian barrels removed from the market, and US shale producers have been cautious about ramping output, wary of committing capital to production that could become uneconomic if a deal suddenly restores Iranian supply. The Energy Information Administration reported earlier this month that crude oil and petroleum product prices increased sharply in Q1 2026, with Brent averaging above $110 for the quarter.
The futures curve tells a similar story. Front-month Brent is in steep backwardation, meaning near-term contracts trade at a significant premium to longer-dated ones. That structure typically signals tight physical supply and trader anxiety about near-term availability. A ceasefire framework has not changed that curve shape. It would take an actual reopening of the Strait, verified and sustained, to flatten it.
The Reopening Problem
Even if a deal is struck this week, energy analysts warn that the logistics of reopening the Strait of Hormuz will keep prices elevated for months. Shipping routes need to be de-mined and re-insured. Tanker operators who rerouted around the Cape of Good Hope will need time to reposition. Port infrastructure on both sides of the conflict zone sustained damage that will require repair. The war premium in oil will not disappear on a handshake.
For traders, the level to watch is Brent at $95. A sustained break below that would signal the market genuinely believes a deal is close and durable. Above $100, the war premium is intact. The next 48 hours of diplomatic signaling will determine which side of that line we land on heading into June.
