The Shadow Fleet

It's Sunday, March fifteenth, and welcome to HigherIQ. On Thursday night, the U.S. Treasury quietly posted a general license allowing the sale of Russian oil currently stranded at sea. The license expires April eleventh. The stated goal is to increase global oil supply and bring prices down from the hundred-dollar-a-barrel range they've been hovering near since the Strait of Hormuz effectively closed. The market's response on Friday was to shrug: Brent crude stayed above a hundred dollars. But the geopolitical response was anything but quiet. Europe called it "very concerning." Ukraine said it would fund more Russian drones. Russia's Kremlin pushed for the U.S. to go further. Today we're going to explain what actually happened, why the sanctions existed in the first place, what the shadow fleet is, and why this thirty-day waiver reveals something important about how energy, sanctions, and war interact in ways that nobody fully controls.

To understand why lifting Russian oil sanctions matters, you need to understand what those sanctions were doing and how Russia was already working around them. After Russia invaded Ukraine in February 2022, the U.S. and the G7 imposed a series of escalating penalties on Russian energy exports. The centerpiece was a price cap: Western companies could provide shipping, insurance, and financing for Russian oil only if it sold below sixty dollars a barrel. The idea was to let Russian oil keep flowing, preventing a global supply shock, while capping the revenue Moscow could earn from it. On paper, it was clever. In practice, Russia built an entire parallel shipping infrastructure to get around it.

That infrastructure is called the shadow fleet. It's a network of over a thousand tankers, most of them old, many of them poorly maintained, operating entirely outside the Western insurance and regulatory system. These ships fly flags of convenience from countries like Panama, Liberia, Gabon, and the Marshall Islands. They turn off their automatic identification systems so their positions disappear from public tracking maps. They spoof GPS signals to show they're in the Pacific when they're actually off the coast of Iran. They conduct ship-to-ship transfers in open water, pumping oil from one tanker to another at sea so the cargo's origin can't be traced back to a sanctioned port. The ownership structures run through layers of shell companies in multiple jurisdictions, sometimes four or five deep, making it nearly impossible to determine who actually controls any given vessel. By the end of 2023, the shadow fleet had grown to over a thousand ships. The U.S. Treasury sanctioned a hundred and eighty-three vessels in a single action in January 2025. Many of those same tankers had carried not just Russian oil but Iranian oil too.

This is an important detail. The Russian and Iranian shadow fleets overlap significantly. The same tankers, the same shell companies, the same opaque ownership networks serve both countries. A ship might load crude at a Russian port in the Arctic, deliver it to India, then pick up Iranian oil in the Gulf of Oman for delivery to China. The Treasury Department's own sanctions filings documented vessels that shuttled between Russian and Iranian cargoes. One network, linked to the son of a senior Iranian political adviser, managed tankers that carried oil for both countries through a web of Panamanian shell companies.

Now consider what happened Thursday night. The Treasury issued General License 134, authorizing the purchase of Russian oil that was already loaded onto tankers as of March twelfth. An estimated one hundred and twenty-eight million barrels of crude is currently sitting on these vessels. That's roughly five to six days' worth of normal Strait of Hormuz throughput. The license runs for thirty days, through April eleventh. The immediate logic is straightforward: with Hormuz effectively closed and oil above a hundred dollars, freeing stranded Russian supply was a way to relieve pressure on global markets. Treasury Secretary Bessent called it "narrowly tailored" and said it "will not provide significant financial benefit to the Russian government."

The problem is that the move didn't actually calm markets. Brent crude stayed near its highest level since 2022. An economist at Jefferies, the investment bank, noted that Russia produces about ten million barrels a day, while the Hormuz closure removes thirteen to fourteen million barrels of daily flow. The math doesn't add up: you can't replace a twenty-percent disruption in global oil transit with a one-time release that covers less than a week. The International Energy Agency also released a historic four hundred million barrels from strategic reserves. That didn't move prices either. The market is telling us something: the supply disruption from the Iran conflict is larger than any single countermeasure can fix.

But the market reaction is only part of the story. The geopolitical consequences are more significant. Russia has been earning an average of five hundred and ten million euros per day from oil and gas exports this month, according to the Centre for Research on Energy and Clean Air. That's fourteen percent higher than February, before the Iran conflict began. Russian oil revenues are up because global prices are up, and global prices are up because of a war that Russia has nothing to do with, at least not directly. A former Putin adviser called the sanctions easing "significant" not for its immediate impact but as a reversal of direction: from tightening to easing. The Kremlin publicly pushed for Washington to go further.

Europe reacted with alarm. The UK said it would maintain its own Russian oil sanctions. The European Council president called the U.S. decision "very concerning" and said it "impacts European security." Zelenskyy, visiting Paris, said lifting sanctions would "lead to a strengthening of Russia's position" and that the revenue would be spent on weapons and drones aimed at Ukraine. France's Macron tried to soften the response, calling it neither "lasting" nor "sweeping." But the core tension is clear: the sanctions were built over three years by a Western coalition to constrain Russia's ability to fund its war in Ukraine. They were partially unwound in a single night to manage the economic fallout from a different conflict.

There's a deeper structural lesson here about how sanctions work in a connected energy market. Sanctions are designed to isolate. But energy markets are global, and disruptions in one region create pressure to reconnect supply from another. The same shadow fleet that was built to evade Russian sanctions is now, paradoxically, part of the solution the U.S. is reaching for. Many of the tankers holding stranded Russian crude are the same vessels that Western governments spent years trying to identify, sanction, and seize. Now those tankers have a thirty-day license to operate freely. The infrastructure built to circumvent the sanctions is being temporarily legitimized by the country that imposed them.

None of this means the sanctions were wrong to impose or wrong to partially lift. Reasonable people can disagree on both. But what it reveals is that the global energy system has fewer degrees of freedom than policymakers tend to assume. When you sanction one major oil producer and then go to war with another, the tools you have left to manage prices are limited. You can release strategic reserves, which the U.S. did, releasing a hundred and seventy-two million barrels from the SPR. You can ease sanctions on a third producer, which is what happened Thursday. You can pressure allies to increase output, which has proven difficult because OPEC members have their own production constraints. And you can hope that the conflict resolves before the thirty-day window closes. What you can't do is control how the market, or the countries involved, respond. The April eleventh expiration date is now a second clock ticking alongside the war itself. If the Hormuz closure persists and the license expires, the same supply problem returns, except now the precedent of easing has been set and the leverage to reimpose has weakened.

So when someone asks why gas prices keep climbing even though the government says it's doing everything it can, here's the picture. The Strait of Hormuz is effectively closed, removing roughly a fifth of global oil transit. The U.S. response has been to release strategic reserves and temporarily lift sanctions on Russian oil, which had been imposed to punish Russia for invading Ukraine. Neither move lowered prices. Russia is earning fourteen percent more from oil this month than last. The shadow fleet that was built to evade Western sanctions is now being temporarily authorized to operate. And the thirty-day license expires April eleventh, with no indication the underlying conflict will be resolved by then. Energy, sanctions, and war are three systems that interact in ways nobody fully plans for. This week showed what happens when all three collide at once.

Stay informed, stay curious, and we'll see you tomorrow.