Over the weekend, tensions between the US, Israel and Iran escalated significantly following a coordinated strike by the US and Israel, which took out much of the Iranian leadership including the Supreme Leader.
Iran has since retaliated, sending waves of drones and missiles against US military as well as civilian targets across the Middle East. So far action from both sides has been limited and is not all out war. That said, the conflict is in motion with no clear signs of de-escalation.
What does this mean for markets?
Iran currently produces 3.2 million barrels of oil per day, which is around 3% of global production. The supply / demand characteristics of the oil market are finely balanced so if this production was disrupted, oil prices could rise materially. Oil price rises act as a tax increase on consumers and business which can impact behaviour. Oil price rises also feed into inflation calculations that the Central Banks around the world consider when setting interest rates.
Beyond Iran's oil output, the other wild card for investors is Iran's proximity to the Strait of Hormuz (SOH) through which 20% of the worlds oil and LNG passes. If this transport corridor became closed, in the short term, the world economy could face an energy shortage. The US is now an exporter of oil, so they are likely to be less impacted, however China and Asia are importers of oil and therefore have more to lose from this scenario. The US and its allies will seek to secure passage of SOH, but military conflict could deter tankers and limit traffic. At this stage, full closure seems unlikely, but remains a risk as shipowners have largely halted traveling through the area after the US declared a maritime warning zone. While Iranian Foreign Minister said on Sunday that his country had no intention of shutting down the strait, Iran also admitted to attacking 3 oil tankers over the course of that day.
At the beginning of the calendar year the price of oil was below US $60 per barrel, but since the US deployed two aircraft carriers to the Middle East, the price has increased due to the tension. The first day of trading after the US attacks the oil price spiked to US $82 per barrel before easing back to slightly below US $80 per barrel.

At this point in time we do not see this as a repeat of the oil shock crisis of the 1970's or the 1990-91 Kuwait invasion, or the 2022 Russia-Ukraine war where the oil price reached around US $120 per barrel for a short time. In 2008 the oil price peaked at US $147 per barrel. To be clear, an oil price of this level for a sustained period would materially negaitvely impact the global economy and the share market (other than energy companies).
This is not our base case however, and while we do not know what is going to happen next, we are thinking in terms of scenario based probabilities.
We see three scenarios with our base case being for a short conflict with an initial oil price rise before recovery.
Scenario 1 (our base case) - this is a short conflict with limited impact on the Strait of Hormuz and oil infrastructure and new Iranian leadership is open to negotiate. Characteristics include continued Iranian missile and drone attacks on US regional bases, followed by precision strikes by US and Israeli forces on the Islamic Revolutionary Guard assets and infrastructure. Strait of Hormuz remains unmined and open for business.
Scenario 2 - where a prolonged conflict sets in, the Strait of Hormuz is partially disrupted with attacks on Gulf Oil infrastructure. Characterised by higher casualties and larger Iranian missile strikes against Qatar and UAE infrastructure. Hezbollah become involved along Israel's northern front and Iraqi militants intensify attacks on US assets.
Scenario 3 - full closure of the Strait of Hormuz, continued military escalation and attacks on oil infrastructure. Characterised by by an attempt to dismantle the country's command structure, Iran lay marine mines in the Strait, seize tankers and launch missile and drone attacks against seaborne vessels.
The table below outlines three key scenarios, the impact on oil prices and the share market, noting that our base case is for a short conflict.

Bottom line
The present situation suggests that we are in scenario 1 and in the absence of an Iranian regime collapse, this is most likely to become an ongoing, calibrated exchange between Iran and the US / Israel, rather than an immediate high intensity war.
However, the situation is fluid and we are monitoring the following 'road signs':
1. Energy supply disruption. A sustained disruption of oil flows through the Strait of Hormuz would materially affect the global energy and freight prices. Short term, this would be tolerable.
2. Inflation and affect on interest rate settings. An energy caused inflation spike may make it challenging for Central Banks to cut rates if economic growth slows. This can be measured from reading the transcripts of Central Bank meetings
3. Confidence effects. Elevated uncertainty can weigh on business and consumer spending patterns. We will be monitoring this through the consumer sentiment surveys.
One final message for investors
Financial assets such as shares and property are long term assets, and at times of uncertainty we encourage investors to take a longer term view.
We would also like to remind investors of share market behaviour during previous military conflicts. The below chart is sourced from an article that we wrote for the Australian Financial Review at the commencement of the Russia / Ukraine war. This table shows that the average price reaction for the share market is generally negative intially, but after 3, 6 and 12 months the markets have generally finished ahead of the pre conflict level. For this reason we are cautious about taking drastic action at this time.

Disclaimer: Any advice contained is generic advice and has been prepared without taking in account any persons objectives, financial situation or needs. Any perosn, before acting on any advice contained in this article should consider consulting with a financial adviser. Investments involve risks, and the value of any investment or income may go down as well as up.



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