Level 1 - Absolute Beginner

Oil is getting more expensive. The price went over $110 for one barrel. This is the highest price in five months.

Big ships carry oil. These ships are called tankers. Many tankers were attacked near Iran. The place is called the Strait of Hormuz. It is a narrow sea road.

Now fewer ships want to go there. Before, more than 20 million barrels left the area every day. Now only about 8.5 million barrels leave.

Saudi Arabia was also attacked. Airports and oil places were hit. People worry the price of fuel will go up in many countries.

oil

A thick black liquid from under the ground. We make fuel from it.

price

How much money something costs.

barrel

A big container. We measure oil in barrels.

tanker

A very big ship that carries oil.

attack

To try to hurt or damage someone or something.

narrow

Not wide. Small from side to side.

fuel

Something we burn to make a car or plane move.

worry

To feel bad because you think something bad will happen.

Level 2 - Elementary

On Tuesday, Brent crude oil briefly traded above $110 a barrel, the highest price in five months. It later settled at about $109.68. American oil, known as WTI, was close to $98.55 after trading above $100 earlier in the day.

The reason is a series of attacks on oil tankers in the Strait of Hormuz, the narrow channel that connects the Persian Gulf to the open sea. The data company Kpler counted at least 18 attacks on tankers in two weeks and blamed Iran for them.

Shipping has slowed down sharply. Kpler says the average flow of oil out of the Persian Gulf has fallen to 8.5 million barrels a day. Only two weeks earlier, the figure was above 20 million barrels a day.

At the same time, Houthi forces from Yemen attacked Saudi Arabia again, aiming at energy sites, airports and military targets. Traders are now paying extra for oil simply because they are afraid supply will stop.

crude oil

Oil as it comes out of the ground, before it is cleaned and made into fuel.

barrel

The standard unit for measuring oil, about 159 litres.

settle

To end the trading day at a certain price.

channel

A narrow stretch of water between two areas of land.

supply

The amount of something that is available to buy.

trader

A person whose job is to buy and sell things like oil or shares.

sharply

Suddenly and by a large amount.

target

A person, place or thing that someone wants to hit or attack.

Level 3 - Intermediate

Brent crude briefly climbed above $110 a barrel on Tuesday before settling near $109.68, its strongest close in five months, while West Texas Intermediate crossed $100 during the session and eased back to about $98.55. The move was driven almost entirely by fear rather than by any single announcement.

According to the data firm Kpler, tankers in the Strait of Hormuz have been struck at least 18 times over the past fortnight, and the firm attributes the campaign to Iran. The strait is the only sea route out of the Persian Gulf, which means a threat there affects roughly a fifth of the world's daily oil supply at once.

The practical effect is already visible in the shipping data. Kpler estimates that average crude flows leaving the Persian Gulf have dropped to 8.5 million barrels a day, down from more than 20 million barrels a day only two weeks ago. Owners are refusing voyages, insurance costs are climbing, and some vessels are waiting outside the strait rather than entering it.

Analysts at the Dutch bank ING argue that the market has now built a substantial geopolitical risk premium into the price. Warren Patterson and Ewa Manthey wrote that prices remain well supported despite relatively strong Gulf flows, and warned that the premium would only fade if shipments stayed stable. For now, they added, there are no signs of that.

session

A single trading day on a financial market.

fortnight

A period of two weeks.

attribute

To say that something was caused or done by a particular person or group.

risk premium

The extra amount buyers pay because they fear supply could be interrupted.

voyage

A long journey by ship.

insurance

Money paid to a company so it will cover your losses if something goes wrong.

vessel

A formal word for a ship or large boat.

well supported

A market term meaning a price is unlikely to fall far, because buyers keep stepping in.

Level 4 - Advanced

Energy markets price two different things at once: the oil that is actually moving and the oil that might stop moving. For most of the past decade the second number was an abstraction, a line in a risk report. On Tuesday it became the dominant term in the equation, as Brent crude pushed through $110 a barrel for the first time since May and settled near $109.68, with West Texas Intermediate briefly clearing $100 before retreating to roughly $98.55.

The proximate cause is a sustained campaign against commercial shipping in the Strait of Hormuz, the twenty-one mile bottleneck through which the Persian Gulf reaches the Arabian Sea. The analytics firm Kpler has logged at least eighteen attacks on tankers over the past two weeks and attributes them to Iran. What distinguishes this episode from earlier flare-ups is not the number of strikes but their cumulative effect on behaviour: Kpler now puts average crude departures from the Gulf at 8.5 million barrels a day, against more than 20 million a fortnight ago. A waterway does not need to be closed to be effectively impassable; it merely needs to become uninsurable.

Simultaneous Houthi strikes on Saudi energy infrastructure, airports and military installations have removed the usual consolation that Gulf producers can route around trouble. The kingdom's east-west pipelines and Red Sea terminals have historically served as the relief valve for Hormuz disruption, which is precisely why they are now being targeted. The result is a market that no longer treats alternative routing as a credible hedge.

ING's commodity strategists, Warren Patterson and Ewa Manthey, framed the situation with careful understatement, noting that prices remain well supported amid ongoing tensions despite relatively strong Persian Gulf flows, and that the embedded geopolitical premium would dissipate only if those flows proved stable and sustained. Their closing observation is the one worth keeping: clearly, there are no signs of this yet. Until insurers, shipowners and refiners can observe several uneventful weeks, the premium is not a distortion to be arbitraged away but a rational assessment of a route that has stopped behaving like infrastructure and started behaving like a contested border.

abstraction

An idea considered in theory rather than as something concrete and immediate.

proximate cause

The immediate, most direct reason something happened.

bottleneck

A narrow point that restricts the flow of traffic, goods or information.

cumulative

Growing in force or effect as more cases are added together.

uninsurable

So risky that no insurance company will agree to cover it.

relief valve

Something that releases pressure; here, an alternative route that eases a blockage.

hedge

An arrangement made to reduce the risk of loss if prices or conditions move against you.