Maria does her grocery shopping every Saturday morning at the Associated supermarket on Junction Boulevard in Queens.
She has done it the same way for eleven years. Same store. Same list. Same budget.
Last Saturday her bill was $340.
Two years ago it was $241.
She filled up her car on the way home. $4.46 a gallon. She remembered paying $3.17 this time last year.
She heard something on the radio about Iran. She turned it off.
"That's not my problem," she said. "We have our own oil now."
She is not wrong about the oil. But she is wrong about the problem.
This is what nobody told Maria. This is what WALLPOST is here to explain.
On February 28 2026 the United States and Israel launched coordinated airstrikes on Iran. By morning Iranian Supreme Leader Ali Khamenei was dead.
Iran retaliated immediately. And then declared the Strait of Hormuz closed.
IN PLAIN LANGUAGE
The Strait of Hormuz is a narrow waterway between Iran and Oman. Through it passes approximately 20 million barrels of oil every single day — roughly 20% of everything the world runs on. When it closes, the global economy feels it within hours.
Here is what happened between that airstrike and Maria's grocery bill. Every link matters.
The world loses one fifth of its oil supply overnight.
The International Energy Agency called it the largest supply disruption in the history of the global oil market. Nobel Prize winning economist Simon Johnson said plainly: "There's no excess capacity anywhere in the world that can fill that gap."
Oil prices spike globally. Immediately.
Within 72 hours Brent crude was up 12%. Within two weeks it hit $120 a barrel. By early May it was trading at $105 — up 44% from before the war began.
America produces enormous amounts of its own oil. In 2024 it was a net energy exporter. Its biggest oil supplier is Canada not Saudi Arabia.
And yet American oil prices rose immediately.
Because oil trades on one global market. When the Strait closes every barrel everywhere reprices upward. Texas oil. Canadian oil. North Sea oil. All of it.
Maria is not paying for Gulf oil. She is paying the Gulf oil price. There is a difference. And it matters.
Gas prices hit the pump within days.
By May 4 2026 the average gallon of regular gasoline was $4.46 across America. That is $1.29 more than the same week last year.
Everything that moves on a truck gets more expensive.
America moves its food on trucks. Diesel trucks. David Ortega, food economist at Michigan State University, explains: "Tractors run on diesel. The majority of food transported in the US moves on trucks. Higher fuel costs translate into higher costs throughout the supply chain — and eventually reach the consumer at the grocery store."
Fertilizer. The hidden link nobody is talking about.
Up to 30% of world fertilizer exports pass through the Strait of Hormuz every year. Since the war began fuel and fertilizer prices have risen 20-40%. Nitrogen fertilizer prices could roughly double from 2024 levels.
These are the inputs that grow Maria's food.
WALLPOST NUMBER
$1.29 How much more per gallon of gas Americans are paying compared to a year ago. The war started February 28. Your wallet felt it by March 3. Your grocery bill will feel it by August.
The USDA now forecasts food at home prices will increase 3.1% in 2026 — nearly double what was projected before the war. Beef prices were already 12.1% higher in March than a year ago.
But the deeper warning is about timing. A price shock hitting wholesale markets today typically takes three to six months to reach retail shelves.
The war started February 28. Three to six months from February is May to August 2026.
The worst hasn't arrived yet.
One more thing nobody said out loud.
Analysts at Evercore ISI calculated that if oil prices remain around $100 a barrel the resulting gas prices will wipe out for most Americans the benefits of the 2025 tax cuts. Only the top 30% would still see a net gain.
The people who received the smallest tax benefit are the same people who spend the highest percentage of their income on food and energy. They received a modest tax cut with one hand. The Strait of Hormuz is taking it back with the other.
What This Means For You
If you are a working family — budget for higher food costs through late summer 2026 regardless of how the war ends.
If you are a small business owner — anything involving transportation, packaging, or food service faces rising costs that won't reverse quickly.
If you are sending money home — the families receiving remittances in South Asia face energy and food price shocks more severe than what you're experiencing here. The dollar amount you send may need to increase to maintain the same purchasing power.
Three weeks after this piece was reported Maria was asked what she had changed about her shopping.
She had switched to store brand cooking oil. Stopped buying fresh salmon. Started buying ground beef in bulk and freezing it.
She had not connected any of these decisions to a waterway in the Persian Gulf. To a decision made in Washington. To a fertilizer supply chain disrupted by a war she turned off on the radio.
She just knew things cost more. She adapted quietly the way working people always absorb hits — without explanation, without context, without anyone telling them why.
Not because knowledge pays her grocery bill. But because understanding the system shaping your life is the beginning of being able to navigate it.
The Strait of Hormuz is 7,000 miles from Junction Boulevard in Queens.
Last Saturday it cost Maria $99 more than two years ago.
Sources: US Energy Information Administration · Bureau of Labor Statistics CPI March 2026 · USDA Food Price Outlook April 2026 · Congressional Research Service · AAA Gas Price Data May 2026 · Simon Johnson MIT statement March 3 2026 · Evercore ISI analysis · Purdue University Agricultural Economics