On Thursday Scott Bessent told Fox Business that the administration might “unsanction the Iranian oil that’s on the water.” One hundred and forty million barrels sitting in tankers at sea would be allowed to enter the open market. Buyers in Japan, India, Singapore and Malaysia could purchase the crude without fear of secondary sanctions. The proceeds would flow back to whoever holds title to the cargo.

He offered no mechanism for confiscating revenues. No escrow. No condition excluding Iranian entities from the sale. “We’re not intervening in the financial markets,” he said. “We are supplying the physical markets.”

In February, the same Treasury designated a dozen shadow-fleet vessels and their operators. Last year it sanctioned Iran’s oil minister for overseeing billions in exports earmarked for the armed forces. The campaign was called “maximum pressure.” Now it proposes to lift restrictions on those same cargoes — mid-conflict, with American aircraft still striking Iranian military sites. Nicholas Mulder, a sanctions scholar at Cornell, observed that the administration is conceding in war what it refused to give in peace.

This blog has tracked Bessent’s binding constraint — the 10-year yield — and his depleting toolkit through the war. The Iranian oil announcement is the next pull on a lever chain that is running out of links. To understand what it accomplishes and what it concedes, you need to follow the barrels — and then the money.

How Iranian oil actually moves

The standard crude transaction is straightforward. NIOC sells at Kharg Island on FOB terms. The buyer’s bank issues a letter of credit. Payment arrives within 30 to 60 days through SWIFT-connected correspondent banks. Iran has not been able to do this since 2018.

What replaced it is a structure the Treasury itself has called “a sprawling network of tankers and ship management firms.” Ships change names and flags. Cargo records are falsified. Ownership is buried in front companies registered in Hong Kong, the UAE and the Marshall Islands. The IRGC now controls roughly half of Iran’s oil export allocations — over 500,000 barrels per day, worth more than $10 billion annually — operating through entities such as Sepehr Energy Jahan, a front company for the armed forces sanctioned in November 2023.

The crude is loaded onto shadow-fleet tankers, shipped to transfer points off the Malaysian coast, relabelled as Malaysian or Omani in origin, and delivered to China’s independent “teapot” refineries in Shandong province. These small refiners purchase Iranian crude at discounts of $7–10 per barrel below Brent. Payment bypasses the dollar entirely. China funnels up to $8.4 billion a year through a covert “construction-for-oil” mechanism, in which Chinese state-backed firms build infrastructure in Iran in lieu of cash. Other payments flow through yuan settlements via CIPS, through Hong Kong intermediaries, or through barter.

Five links in a chain — NIOC allocation, front company, shadow tanker, ship-to-ship transfer, teapot refinery — each extracting a commission, each adding delay. The shadow fleet itself now comprises over 600 tankers, including 180 very large crude carriers. Voyage times have compressed from 85–90 days to 50–70 days as the network has matured from an improvised workaround into, as one maritime intelligence firm put it, a “functional parallel system.” The system works. It does not work efficiently. And its inefficiency is the key to understanding what Bessent’s waiver actually changes.

Iran has not been fully paid

A question follows: has Iran already received the money for the oil sitting on those tankers? If so, Bessent’s waiver is a free play — the barrels reach the market, and Iran gains nothing additional.

The evidence says otherwise. Revenue collection is chronically incomplete. Iran’s parliament disclosed that of $20 billion in oil export earnings over eight months, only $13 billion had reached the government. Billions more sit with overseas “trustees” — intermediaries who, according to Iran’s own Planning and Budget Organisation, have refused to repatriate the money. These trustees are companies registered in Hong Kong, Dubai, Turkey and mainland China. They change names and registration details regularly, though the same networks operate behind the scenes. Some use pooled foreign currency as collateral to secure loans for their own private ventures — Iranian oil revenue funding private international business that has nothing to do with the Iranian state. An estimated $22–30 billion in Iranian assets remain frozen in Chinese banks alone, with Beijing unwilling to release them even to its nominal ally. A former senior Iranian oil official put it plainly: “Even if export volumes increase, the key problem is the repatriation of revenues.”

The oil on those tankers sits at various stages of the payment chain. Some cargoes may have been contracted to Chinese buyers but not yet settled. Some may be in floating storage awaiting a price. Some may belong, in legal terms, to front companies whose relationship to NIOC or the IRGC is deliberately opaque. What is clear is that Iran has not collected full value.

The revenue paradox

This creates an uncomfortable arithmetic. Under the shadow trade, Iranian crude sells at a $7–10 discount through layers of intermediaries, with revenue repatriation that is sluggish at best and looted at worst. Under Bessent’s waiver, the same oil could sell at open-market prices — currently above $100 — to solvent buyers through transparent channels.

The IRGC may receive more per barrel from unsanctioned oil than from sanctioned oil.

Bessent has not proposed any mechanism to prevent this. His framing is entirely about physical supply. He is not seizing cargoes. He is not escrowing proceeds. He is not conditioning the waiver on Iran’s exclusion from the sale. The precedent with Russian oil — temporarily unsanctioned with exemptions in place until April 11 — involved no revenue-interception mechanism either.

Critics noted the contradiction. Some argued China may have already contracted much of the oil. Others pointed out that releasing it effectively funds Iran while supposedly fighting Iran. Bessent’s counter — that the oil would “go up to a market price and end up in places other than China” — addresses the supply question. It does not address the revenue question. He appears to have decided that the revenue question is someone else’s problem.

The binding constraint, revisited

Bessent has never been coy about what he watches. “The president wants lower rates,” he told Fox Business in February 2025. “He and I are focused on the 10-year Treasury and what is the yield of that.” At the Treasury Market Conference last November he was more explicit still: “As Treasury Secretary, my job is to be the nation’s top bond salesman. And Treasury yields are a strong barometer for measuring success in this endeavor.” This is a man who made his reputation as chief investment officer of Soros Fund Management, one of the most successful macro traders of his generation — a career built on identifying when bond markets were mispriced and betting against them. Now his success is measured by whether yields go down. The administration would not lobby the Fed to cut. It would use fiscal and supply-side levers to push long-term yields down directly. “If we deregulate the economy, if we get this tax bill done, if we get energy down,” Bessent said, “then rates will take care of themselves.”

Energy did not get down. It went the other way.

This blog argued on March 10 that the 10-year yield was Bessent’s binding constraint. On March 13, after mines decoupled the Hormuz reopening timeline from the war timeline, it rose to 4.26%. By March 19, the day of his Fox Business appearance, it stood at 4.25%. Then Friday happened. The 10-year opened the session at 4.275%, touched an intraday high of 4.407%, and closed at 4.384% — up 13.5 basis points in a single day. The weekly candle tells the story more starkly: open 4.261%, low 4.169%, high 4.407%, close 4.384%. It is one of the largest bullish weekly candles on the US10Y chart since mid-2024. The yield is now approaching the 4.6–4.7% zone that, in the spring of 2024, triggered a bear steepening scare and forced the Treasury to tilt issuance toward bills. One analyst told CNBC at the time that Bessent’s real job was to prevent the 10-year from breaking 5 per cent, “at which point Trumponomics breaks down, with equities rolling over and housing and other rate-sensitive sectors breaking.” At 4.384% and climbing, the margin of safety is not wide.

The mechanism is direct. Brent at $111 feeds into CPI. CPI feeds into inflation expectations. The Fed, which just raised its PCE inflation projection from 2.4 to 2.7 per cent, signals no imminent cuts. The 10-year reprices. Mortgages follow. The $11 trillion refinancing wall — nearly a third of America’s marketable debt maturing within a year, at an average coupon of 3.3% — gets more expensive with every basis point.

The Iranian oil waiver fits the pattern of every tool Bessent has deployed since the war began. Russian oil unsanctioned: March 6. SPR release, 400 million barrels: March 11. Tanker insurance programme: March 6. Jones Act waiver: March 19. Iranian oil unsanctioned: March 19. Each tool pulled in sequence. Each one a concession dressed as strength. The Iranian waiver is simply the latest — and the most revealing, because it makes explicit what the others implied: the yield curve outranks the sanctions regime.

What it tells you about the deal

This blog argued two days ago that the administration deliberately preserved Iran’s oil infrastructure during the strikes because it is a post-deal asset. Refineries, export terminals and pipelines were left intact while nuclear facilities, missile sites and air defences were destroyed. Read as military strategy, this looks like restraint. Read as political economy, it is the preservation of a bargaining chip: Iran’s oil re-entering the market at full capacity — roughly 4 million barrels per day — is the prize the deal offers to the global economy, and the weapon it points at OPEC.

The Iranian oil waiver is consistent with this logic, but it accelerates the timeline. Instead of waiting for a deal to release Iranian barrels, Bessent is releasing them now — 140 million barrels’ worth — as an emergency measure to hold the yield curve while the deal is still being negotiated. He is spending the post-deal dividend in advance, hoping the deal catches up.

The Japan angle is worth noting for readers of this blog. On the same day Bessent made his announcement, Trump hosted Prime Minister Takaichi at the White House. Bessent described Takaichi as “very pro-US” and said he expected Japan to release additional oil from its strategic petroleum reserve beyond its contribution to the coordinated G7 action. He praised Japan’s minesweeping capability — a subject this blog has examined — and noted that Japan’s navy has some of the best mine-detection and clearance assets in the world. The unsanctioned Iranian barrels, he added, could flow to Japan among other destinations. For Tokyo, this is a double ask: contribute both your reserves and your military assets, and in return, receive access to crude that was previously flowing exclusively to your strategic rival in Beijing. Whether Takaichi accepts the trade depends on the domestic politics of Article 9 and the constitutional interpretation of mine clearance in contested waters — but the economic logic, at least, is clear.

Combined with the 130 million barrels of Russian oil already unsanctioned and the 400 million barrel SPR release, he calculates roughly 260 million excess barrels — enough for about three weeks of market stabilisation. Three weeks, not three months. The toolkit buys time. It does not solve the problem. The problem, as this blog wrote on March 13, is physical. You cannot SPR your way out of a minefield, and you cannot sanctions-waiver your way out of one either.

The signal to future sanctions targets

The sanctions regime’s power rests on credibility — the belief among shipping companies, insurers and foreign banks that America will enforce its restrictions consistently. The Treasury designated a dozen shadow-fleet vessels in February. It proposes to unsanction their cargo in March. The signal requires no decoder ring.

For Tehran, the situation is quietly remarkable. Iran spent years demanding sanctions relief on its oil exports as a precondition for nuclear negotiations. Washington refused. Now, with American aircraft still over Iranian airspace, the Treasury secretary offers that relief — not as a diplomatic concession but as an emergency measure to calm the bond market.

Bessent would reply that he is playing a short game to win a longer one: suppress the price for a fortnight, hold the yield curve, buy time for the deal. Perhaps. But as this blog has noted before, his toolkit is thinner after each use. The Russian oil card was played on March 6. The SPR was tapped on March 11. The verbal intervention was spent on March 9. The Iranian waiver is March 19. What remains for March 26, if the mines are still in the water and the yield is still climbing?

On Friday the 10-year closed at 4.384%, having touched 4.407% intraday. The macro trader turned bond salesman has unsanctioned the oil of the country he is bombing in order to keep yields from breaking his framework. The bond market is not buying.

This article reflects my own reading of publicly available information and is not investment advice.

— Gyokuro