Brent Crude Stays Above $100: Why Tanker Attacks Are Raising Fresh Global Oil Supply Fears

Brent crude has remained above the $100-a-barrel mark as escalating attacks on commercial shipping in and around the Middle East raise fresh concerns about the safety of global oil supplies. The latest jump highlights how quickly geopolitical tensions can translate into higher energy prices, particularly when critical shipping routes are already under pressure.

Brent crude futures were trading around $101 a barrel on Thursday, September 10, while U.S. West Texas Intermediate (WTI) remained close to $96 a barrel. The move follows a sharp rise in oil prices after Iran and the United States exchanged major attacks involving shipping in the region.

Why Is Oil Above $100 Again?

The immediate concern is not simply how much oil is being produced. It is whether that oil can safely reach international buyers.

Iran said it had attacked 10 ships near the Strait of Hormuz after the United States sank five Iranian oil tankers. The latest escalation has increased the risk that commercial shipping through the region could remain disrupted for an extended period.

Markets react strongly to such developments because the Strait of Hormuz is one of the world's most important energy corridors. Before the current conflict, roughly one-fifth of global oil and gas supplies moved through the waterway.

When tanker traffic falls, traders immediately begin pricing in the possibility of tighter supplies.

What Is the Strait of Hormuz?

The Strait of Hormuz is a narrow waterway connecting the Persian Gulf with the Gulf of Oman and the wider Arabian Sea.

It is strategically important because major energy producers in the Gulf depend on maritime routes to export crude oil and petroleum products.

Any prolonged disruption can therefore create a chain reaction:

Shipping risk → fewer tanker movements → tighter oil availability → higher crude prices → higher transportation and production costs.

Recent ship-tracking data showed only seven vessel transits through the Strait of Hormuz on Wednesday, below the recent 10-day average of 14. No liquefied natural gas tankers were recorded in that day's movements.

Tanker Attacks Are Making Traders More Nervous

Oil markets were already dealing with supply uncertainty. The latest attacks add another layer of risk because tanker operators, insurers and energy companies have to consider not only the price of crude but also the danger and cost of transporting it.

If shipping companies become reluctant to send vessels through high-risk areas, exporters may have difficulty moving oil even when crude remains available at production sites.

That distinction is important.

The world does not necessarily have to run out of oil for prices to surge. A disruption in transportation can be enough.

Red Sea Risk Adds Another Problem

The concerns are also spreading beyond the Strait of Hormuz.

Iran-aligned Houthi forces have intensified activity around Yemen and the Red Sea, while the seizure of the Yemeni port of Mocha has increased concerns about shipping through the Bab el-Mandeb Strait.

The Bab el-Mandeb is another major maritime chokepoint. It connects the Red Sea with the Gulf of Aden and is important for shipments travelling between the Middle East, Europe and Asia.

This means oil traders are watching two critical maritime corridors at the same time.

Why Does $100 Oil Matter?

The $100 level has psychological as well as economic significance.

When crude moves above $100, investors begin reassessing inflation, corporate costs and consumer spending.

Higher oil prices can increase:

• Petrol and diesel costs
• Airline operating expenses
• Shipping costs
• Manufacturing expenses
• Logistics and transportation costs
• Fertiliser and chemical costs
• Electricity and energy-related costs

Companies facing higher operating expenses may eventually pass some of those costs on to consumers.

That can make inflation harder for central banks to control.

What Could It Mean for India?

India is particularly sensitive to crude oil prices because it is one of the world's largest oil importers and consumers.

A sustained rise in crude prices could increase India's import bill and put pressure on the country's trade balance. It can also influence the rupee because higher energy imports require more foreign currency.

The impact can spread through the economy.

Expensive crude → higher import costs → pressure on the rupee → higher transportation costs → inflationary pressure.

India is already looking at ways to strengthen energy security. Government advisers have highlighted greater use of biofuels, ethanol blending and other domestic energy resources as part of efforts to reduce dependence on imported crude.

Could Oil Reach $120?

A move toward $120 cannot be ruled out if supply disruptions become significantly worse, but it is not inevitable.

Oil prices depend on several variables at the same time:

1. How long the shipping disruptions continue.
2. Whether the Strait of Hormuz can return to more normal traffic levels.
3. Whether attacks expand to additional energy infrastructure.
4. How much oil producers can add to the market.
5. How quickly consumers respond to higher prices.
6. Whether diplomatic efforts reduce the conflict.

If shipping gradually normalises, some of the geopolitical premium built into oil prices could disappear.

However, a prolonged disruption could produce a very different outcome.

The Bigger Issue: A Geopolitical Risk Premium

Part of the current oil rally reflects what traders call a geopolitical risk premium.

This means buyers are willing to pay more today because they fear that future supplies could become more difficult or expensive to obtain.

The market therefore does not have to wait for an actual global shortage.

Fear of a shortage can move prices first.

That is why every new attack, tanker incident or announcement concerning the Strait of Hormuz is being closely watched by crude traders.

What Should Investors Watch Next?

For investors, the most important indicators are likely to be:

Oil prices: Brent remaining above $100 would indicate that supply concerns continue to dominate sentiment.

Hormuz traffic: A sustained recovery in tanker movements could reduce supply fears.

Middle East production: Any new shutdowns at major oil facilities could put additional pressure on prices.

Shipping costs: Rising tanker insurance and freight rates would indicate that transportation risks remain elevated.

Global inflation: Persistent energy inflation could affect expectations for interest-rate decisions.

Indian markets: Oil-sensitive sectors such as aviation, paints, chemicals, tyres and transportation could face greater cost pressure if crude remains elevated.

What Happens If Oil Stays Above $100?

The biggest concern is not necessarily a few days of expensive oil. Markets can absorb temporary price spikes.

The bigger challenge would be a prolonged period above $100.

If high crude prices persist, the effects could gradually move from financial markets into household budgets and corporate earnings. Central banks could also face a difficult choice between supporting economic growth and controlling inflation.

For India, the situation reinforces the importance of energy diversification, domestic fuel alternatives and efficient crude procurement.

The Bottom Line

Brent crude staying above $100 is a reminder that oil prices are being driven by much more than traditional supply-and-demand calculations.

The combination of tanker attacks, disrupted shipping routes, Middle East geopolitical tensions and uncertainty around future oil flows has created a powerful risk premium in the market.

For now, traders are watching the Strait of Hormuz and Red Sea routes closely. Any sign of further disruption could push crude higher, while a meaningful improvement in shipping activity could ease some of the pressure.

The next phase of the oil market may therefore depend less on what happens at individual oil fields and more on whether the world's most important energy shipping routes remain open and secure.