Chaos is the new norm with the Middle East
A single post on a social media platform has reminded the world how fragile the arteries of global commerce remain. Donald Trump's announcement that the United States would assume control of the Strait of Hormuz — and levy a 20 percent charge on all cargo passing through — sent oil markets lurching upward overnight, with ripple effects already reaching Australian petrol stations and farm supply chains. The Strait carries one-fifth of the world's oil and gas, and when uncertainty gathers around it, the cost is borne not by governments or traders but by the motorist at the pump and the farmer ordering fertiliser. Whether this proves a negotiating gesture or a genuine realignment of maritime power, the market is already treating it as the latter.
- A single Truth Social post triggered a 5% spike in WTI crude overnight, with Brent crude now up 10% since Monday — markets are not waiting for confirmation before pricing in the worst.
- The Strait of Hormuz carries 20% of global oil and gas, and with developed-nation stockpiles already critically low, analysts warn rationing could become necessary within four to six weeks if the waterway closes.
- Australian motorists face a fragile buffer: wholesale petrol prices have held for now, but the NRMA warns that sustained turmoil will push pump prices higher, and tax concessions on fuel are set to expire entirely by August.
- Diesel is already climbing 1.4%, urea fertiliser surged 7.23% in a single day and is up 12.3% for the month — tradies and farmers are absorbing costs that have nowhere to go but up.
- Analysts are divided on Trump's intent — one senior NAB economist notes the announcement likely violates international law and would draw Gulf ally opposition — but uncertainty itself is the market's enemy, and it is already doing damage.
Oil prices lurched upward overnight after Donald Trump posted on Truth Social that the United States would assume control of the Strait of Hormuz and impose a 20 percent levy on all cargo passing through. West Texas Intermediate crude jumped 5 percent immediately, climbing further to $79.28 a barrel by midday in Asia. Brent crude, the international benchmark, reached $84.19 — up roughly 10 percent since late Monday.
The Strait of Hormuz is no minor shipping lane. It carries approximately one-fifth of the world's oil and gas, and its vulnerability is already well understood by markets. Prices had eased in recent weeks following a memorandum of understanding between the US and Iran, but Middle East analysts described that agreement as deliberately vague. When Iran announced it was closing the strait late last week, prices began climbing again. Trump's announcement simply accelerated the move.
The deeper concern is inventory. Commsec equity strategist James Gruber warned that oil stockpiles across developed nations are extremely low, and that a genuine closure of the Strait could force rationing within four to six weeks. NAB senior analyst Jason Wong offered a more cautious reading of Trump's intentions, noting the announcement likely violates international law and would face resistance from Gulf allies — but acknowledged that a 20 percent levy would add roughly $16 to the cost of every barrel on a supertanker, a cost that flows directly down the supply chain.
For Australian motorists, the NRMA described the situation as deepening chaos. Wholesale petrol prices have remained relatively stable so far, but that buffer is fragile. The RACQ's economist Ian Jeffreys does not anticipate a shock on the scale of earlier this year, though he noted that tax concessions on diesel and petrol are set to expire entirely by August, removing another layer of protection.
The pressure on businesses is already tangible. Diesel has risen 1.4 percent as of midday. Urea fertiliser — critical for Australian farming — spiked more than 7 percent on Monday alone and is up over 12 percent for the month. Rabobank's Stefan Vogel noted that Australian farmers have largely secured their winter supply needs, providing some breathing room until October, but the underlying trajectory is clear.
What unfolds next depends on whether Trump acts on his announcement, how Iran responds, and how long traders remain convinced that global supplies will tighten. For now, the market is pricing in the worst, and Australians at the pump and on the land are waiting to see whether that judgment proves correct.
Oil prices lurched upward overnight, and the culprit was a single post on Truth Social. Donald Trump announced that the United States would assume control of the Strait of Hormuz, positioning itself as the waterway's guardian and imposing a 20 percent levy on all cargo passing through. The market reacted immediately. West Texas Intermediate crude jumped 5 percent in the hours after the announcement. By midday in Asia, it had climbed another 1.4 percent to $79.28 a barrel. Brent crude, the international benchmark, was up roughly 10 percent since late Monday afternoon to $84.19.
For Australian motorists already bracing for higher fuel costs, the timing could not be worse. The Strait of Hormuz is not some minor shipping lane—it carries roughly one-fifth of the world's oil and gas supplies. When it closes, or when the threat of closure ripples through markets, the pain spreads globally. Prices had actually fallen in recent weeks, helped along by a memorandum of understanding between the United States and Iran. But that agreement was deliberately vague, according to Middle East analyst Will Todman, leaving room for exactly this kind of uncertainty. Late last week, Iran announced it was closing the strait again, sending prices climbing. Trump's post simply accelerated what was already in motion.
The question now is whether these prices will stick. James Gruber, an equity market strategist at Commsec, said the answer depends on how nervous commodities traders become about global supplies. The real vulnerability is inventory. Oil stockpiles across developed nations are extremely low. If the Strait actually closes, Gruber warned, rationing could become necessary within four to six weeks. That is not a distant hypothetical—it is a concrete timeline that traders are already pricing in.
National Australia Bank senior analyst Jason Wong offered a more skeptical read of Trump's announcement, noting that with Trump, it is often unclear how seriously to take such pronouncements. But he also pointed out that Gulf allies would likely object to the plan, and that it almost certainly violates international law. The math is straightforward: a 20 percent levy would add roughly $16 to the cost of every barrel on a typical supertanker. That cost gets passed down the supply chain.
Australian refineries depend heavily on Tapis crude, a regional benchmark that has already risen $1.70 in the past 24 hours and continues climbing. The NRMA, the motoring group, described the situation as one of deepening chaos. Peter Khoury, a spokesperson, said that if the turmoil persists, petrol prices at the pump will rise. Wholesale prices—what petrol stations actually pay for refined fuel—have held relatively stable so far, but that buffer is fragile. The RACQ offered a slightly more measured view, with economist Ian Jeffreys saying he does not expect a shock like the ones seen in February and March. But he also noted that tax concessions on diesel and petrol are set to expire entirely by August, removing another cushion.
For businesses, the squeeze is already tightening. Diesel prices have climbed 1.4 percent as of midday. Urea fertiliser, essential for farming, spiked 7.23 percent on Monday alone and is up 12.3 percent for the month. Tradies and farmers—the backbone of rural Australia—are in the firing line. Stefan Vogel, a general manager at Rabobank, said the fertiliser price will depend on demand from major importers like Brazil and India as they prepare for planting season. Australian farmers have largely secured what they need for winter, which provides some breathing room until October. But that reprieve is temporary, and the underlying pressure is building.
What happens next depends on forces largely beyond Australian control: whether Trump follows through on his announcement, whether Iran responds, whether the Strait actually closes, and how long traders remain convinced that supplies will tighten. For now, the market is pricing in the worst. Motorists checking the pump price, and farmers calculating fertiliser costs, are waiting to see if that pessimism proves justified.
Citas Notables
The risk with oil going forward is that if there is this closure of the Strait of Hormuz, and Trump has acknowledged this, that inventories for oil are extremely low across the developed world. Some analysts suggest it could be four to six weeks before we start having to do things like rationing.— James Gruber, Commsec Equity Market Strategist
With Trump one never quite knows how seriously to take such pronouncements, but Gulf allies would not be pleased with this plan and it almost certainly violates international law.— Jason Wong, National Australia Bank senior analyst
La Conversación del Hearth Otra perspectiva de la historia
Why did Trump's post move the market so much more than Iran's announcement of the closure itself?
Because markets live on uncertainty, but they also live on the unexpected. Iran closing the Strait is a recurring threat—it happens, prices spike, things settle. But Trump inserting the US government as a toll collector, with a specific 20 percent levy, that is a new variable. It is not just geopolitical risk anymore; it is policy risk. And it is American policy, which affects every dollar transaction globally.
The RACQ said they don't expect a shock like February and March. What made those months different?
Those were sharper, faster spikes. This is slower-building pressure. But the RACQ's confidence might be premature—they're not accounting for the tax concessions ending in August. That removes a government subsidy that has been cushioning prices. When that expires, even a modest oil price will translate into real pain at the pump.
Four to six weeks until rationing. That seems extreme.
It does, but it is based on actual inventory data. Developed nations have drawn down their oil reserves significantly. If the Strait closes and stays closed, there is no buffer. Rationing is not a prediction; it is a contingency plan that traders are already factoring in.
Why does Tapis crude matter more to Australia than Brent or WTI?
Because it is what Australian refineries actually buy. Brent and WTI are global benchmarks—they set the tone. But Tapis is the regional price that determines what refineries pay, and what they pay determines what petrol stations charge. It has already risen $1.70 in 24 hours. That is not abstract.
The NRMA called it chaos. Is that fair?
It is fair if you are running a business that depends on stable fuel costs. For a tradie or a farmer, this is not an interesting geopolitical story—it is a direct threat to margins. Chaos is the right word when you cannot predict your costs week to week.