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Brent crude oil prices slipped to around $114 a barrel on Thursday. That followed a gain of more than 1% in the prior session. Traders were weighing a reported diplomatic opening between Washington and Tehran against persistent fears of renewed conflict. Brent is the benchmark for roughly two-thirds of the world’s oil. It had settled at $115.32 on Wednesday, up 1.3%. US WTI crude closed at $102.78 that day, up 2.9%, before easing back above $101 a barrel on Thursday.

The swing shows how sensitive energy markets have become to every signal out of the region. Wednesday’s rise reflected fears of renewed US military action against Iran and further supply disruption. Thursday’s pullback came after new reports. Those reports said Vice President JD Vance had sent a letter to Iranian officials aimed at reviving negotiations. President Trump downplayed the outreach. He framed it as humanitarian aid rather than a formal overture.

Why Brent crude oil prices keep swinging on headlines

Under normal conditions, a single diplomatic letter would barely move a market this large. What’s different now is how thin the market’s safety margin has become. UBS analyst Giovanni Staunovo said global inventories “have fallen sharply.” He added that pledged strategic reserve releases are “largely completed.” That means the usual buffer governments use to calm price spikes has mostly been spent. UBS also pointed to record freight costs, constrained tanker capacity and recovering Chinese imports. These structural factors are likely to keep prices elevated regardless of how the diplomatic track unfolds.

Emirates NBD’s Nick Stadtmiller framed the environment simply: “Oil prices remain volatile as markets respond to developments affecting regional production and infrastructure.” UBS’s own base case has Brent holding near $110 a barrel at year-end. That would put today’s levels closer to the high end of its expected range than the low end.

The supply risk that won’t go away

Behind the day-to-day price moves sits a bigger structural story. The same Wall Street Journal report that described the Vance letter also carried another warning. It said Washington has warned several Gulf Arab governments to prepare for a possible renewed campaign against Iran. That warning applies once the 3 November US midterm elections are over. A letter today doesn’t rule out strikes next month, and traders know it.

Aviation has already adjusted to that reality. The European Union Aviation Safety Agency has extended its advisory against flying over Iran, Iraq, Lebanon and Jordan. The advisory also covers nearby Gulf waters, and it now runs through 16 November. Several carriers have pushed their own route restarts into early December. That is a sign the industry expects the underlying risk to persist well past any single news cycle.

What traders are watching next

Three triggers could move Brent meaningfully before year-end. A confirmed, substantive Iranian response to the reported US outreach would likely ease the risk premium further. A second trigger works the other way. If Washington is actually preparing post-midterm military action, rather than simply warning allies to plan for it, prices would almost certainly rise. A third trigger is tanker traffic. Any disruption to actual shipping through the Strait of Hormuz, rather than just airspace avoidance, could overwhelm even a calming diplomatic signal.

For now, the market is pricing genuine uncertainty rather than a clear direction. Brent’s roughly $1-a-barrel move this week is small by the standards of an active shooting-war scenario. It is large by the standards of a market that believes a deal is close.

Analysts at multiple banks have made the same basic point in different words this week: the floor under oil prices is higher than it was a year ago, and the ceiling is capped mainly by how quickly diplomacy or conflict resolves one way or the other. That leaves traders reacting to headlines in both directions rather than settling on a single view, which is why a single reported letter and a single warning to Gulf allies can both move the same market on the same day.

Frequently asked questions

Why did Brent crude oil prices fall today?
Prices eased after reports that the US had sent a diplomatic letter to Iranian officials. Traders read it as a modest de-escalation signal after Wednesday’s gains.

What is Brent crude trading at right now?
Brent slipped to around $114 a barrel on Thursday after settling at $115.32 on Wednesday, up 1.3% that session.

What is WTI crude trading at?
US WTI crude eased to just above $101 a barrel on Thursday. It had closed Wednesday at $102.78, up 2.9%.

Why do analysts expect prices to stay elevated?
UBS cites sharply reduced global inventories, largely exhausted strategic reserve releases, record freight costs and constrained tanker capacity. These are structural pressures, independent of any single diplomatic development.

What is UBS’s year-end forecast for Brent?
UBS expects Brent to remain near $110 a barrel at year-end. It cites continued Middle East supply volatility and geopolitical uncertainty.

How does the Gulf airspace situation affect oil markets?
EASA’s extended avoidance advisory through 16 November signals that aviation and energy risk assessments both expect regional tension to persist. That reinforces the supply-risk premium built into current prices.

For the diplomatic and political context behind this week’s price moves, see our coverage of US Iran diplomatic talks and Middle East flight suspensions. For how energy costs are feeding into broader markets, read our report on the OPEC+ output decision.

Washington avoided a shutdown in October. But the US government shutdown deadline everyone is now watching sits just six weeks away. Federal agencies are funded through 11 December 2026. That is under a continuing resolution President Trump signed on 2 September, after the House passed the Senate’s measure, H.R. 6500, by 370-48. A lapse would begin 12 December if Congress fails to act again. As of 28 October, none of the twelve full-year FY2027 spending bills had been enacted.

That sounds like routine Washington brinkmanship. But the backdrop is not routine. Federal employees have already lived through three funding lapses since October 2025. Together they total 122 days, including a 43-day shutdown last October, one of the longest in US history. The December cliff is the fourth test of the same fight in just over a year.

What actually happened to avert the shutdown

The path to the current calm took several turns. The House passed a clean continuing resolution, H.R. 9770, by 220-205 on 21 July. That bill had a 4 December funding date attached. The Senate then advanced its own version 89-4 on 3 August. It passed it 90-6 on 8 August, pushing the date to 11 December. Six senators voted no on final passage: Bill Cassidy, Rand Paul, Tim Kaine, Ed Markey, Elizabeth Warren and Bernie Sanders. The House ultimately accepted the Senate’s later date. Trump signed the bill on 2 September.

The core dispute has not gone away. House Republicans’ spending bills total roughly $1.856 trillion. That is about $217 billion, or 13%, above FY2026 levels. The Senate has not yet settled its own spending toplines. It has postponed committee markups twice over that gap. The current law also blocks a White House budget office rule. That rule would have required political appointees to sign off on grants until 11 December. The law also bars the Department of Homeland Security from shifting funds toward Border Patrol in the interim.

The US government shutdown deadline and federal workers

Federal employees have reason to watch the fine print as closely as the calendar. An Office of Management and Budget and Office of Personnel Management memo issued 23 October rescinded 2025 guidance. That guidance had allowed reductions in force during a funding lapse. The change followed a September settlement in the case AFGE v. OMB over shutdown-era layoffs. Separately, Trump’s 26 August alternative pay plan would hold 2027 civilian base and locality pay at 0%. That holds unless Congress sets a different figure. Law enforcement personnel would see 3.8%.

Photo: Dkallen78 / Wikimedia Commons (CC BY-SA 4.0)

None of these measures resolve the underlying fight. They simply define the terms of the next one. That assumes lawmakers need another stopgap rather than finishing full-year bills by 11 December. Most Capitol Hill trackers consider a further stopgap the likeliest outcome.

Why the midterms change the political math

The timing is not incidental. The 11 December deadline falls after the 3 November midterm elections. That leaves a lame-duck session as the main vehicle for either a fifth stopgap or a genuine spending deal. Lawmakers on both sides have strong incentives to avoid a shutdown fight before voters go to the polls. That is part of why September’s deal cleared with comfortable margins despite the underlying disagreement over spending levels.

Once the elections are behind them, that incentive structure changes. A lame-duck Congress facing a December deadline has historically been more willing to either strike a deal quickly or let brinkmanship run close to the wire. Control of one or both chambers could also shift in January, adding further pressure.

What happens between now and the deadline

Three signals are worth tracking. The first is whether a second short-term stopgap starts circulating before Thanksgiving. That would suggest leadership has already concluded full-year bills won’t be ready. The second is whether any of the twelve FY2027 appropriations bills reach the floor in November. Real movement there would be the clearest sign a deal is within reach. The third is whether federal agencies begin publishing updated shutdown contingency plans. That typically signals an administration bracing for a real possibility of a lapse.

Frequently asked questions

When does current government funding expire?
Federal agencies are funded through 11 December 2026 under the continuing resolution Trump signed on 2 September. A lapse would begin 12 December without further action.

Did a shutdown happen in October 2026?
No. Congress passed a continuing resolution before the prior deadline, avoiding a lapse, though the underlying spending dispute between the House and Senate remains unresolved.

How many shutdowns have there been since October 2025?
Three funding lapses have occurred since October 2025, totaling 122 days, including a 43-day shutdown that was among the longest in US history.

What happens to federal pay if there is another shutdown?
Trump’s alternative pay plan from 26 August would hold 2027 civilian base and locality pay at 0% unless Congress legislates otherwise. Law enforcement personnel would receive 3.8%.

Can federal workers be laid off during a future lapse?
An October 23 memo from the budget and personnel offices rescinded 2025 guidance that had permitted reductions in force during a shutdown, following a September court settlement on the issue.

Why does the December deadline matter politically?
It falls after the November 3 midterms, removing the pre-election incentive that helped produce September’s deal and shifting the fight to a lame-duck Congress with different pressures.

For related coverage of Washington’s fiscal and political calendar, see our reports on the Fed rate decision and the Nobel Prize in economics. For how this fits into broader US foreign policy bandwidth, read our coverage of US Iran diplomatic talks.