BRUSSELS, July 11 — Since Russia’s full-scale invasion of Ukraine on February 24, 2022, the architecture of Western sanctions on Russian energy has become a layered machine, each new mechanism designed to close a loophole the last one opened. The mechanics here are worth dissecting, because the next phase—if the Trump administration follows through on reported plans for direct tariffs on Russian oil—would mark a fundamental shift in strategy. The initial response in March 2022 was blunt.
The United States banned imports of Russian oil, liquefied natural gas, and coal outright. The European Union, a far heavier consumer, took a more calibrated path.
Before the war, the bloc relied on Russia for roughly 40% of its natural gas and 27% of its oil imports. That dependency dictated a phased approach: an embargo on Russian seaborne crude oil took effect in December 2022, followed by a ban on refined petroleum products in February 2023. The catch with direct embargoes is that they risk pulling supply off the global market and spiking prices, which hurts the imposing economies as much as the target.
So in December 2022, the G7, the European Union, and Australia devised a more surgical instrument: a price cap of $60 per barrel on Russian crude oil. Follow the money on this one.
The cap does not ban the purchase of Russian oil. Instead, it restricts access to Western shipping insurance and financial services for any cargo sold above the $60 threshold. Since the vast majority of the world’s tanker fleet is insured through London and European markets, the mechanism was designed to let Russian oil keep flowing—keeping global supply stable—while squeezing Kremlin revenue.
Russia’s response was predictable. It redirected exports to China and India, often selling at discounted prices to buyers willing to operate outside the Western insurance framework. Moscow built its own shadow fleet of aging tankers and began using alternative insurance schemes.
The question has always been whether the cap actually holds. On closer reading of the data, the cap appears to have bitten.
By 2024, according to the International Energy Agency, Russia’s oil export revenues had fallen by approximately 30% compared to pre-invasion levels. That is a significant hit, even accounting for the discounts Russia offers its new customers. The proposed Trump administration tariffs would introduce a completely different mechanism.
Instead of denying services to Russian oil sold above a certain price, the U.S. would impose direct duties on Russian oil imports to America. The practical effect on volumes is likely minimal—U.S. imports of Russian crude have been negligible since the 2022 ban.
The signal, however, is something else entirely. Tariffs are a tool of direct economic warfare, applied at the border. They would hit any Russian oil that does reach American shores, and they would create a new legal and financial barrier that complicates any future normalization of trade.
What to watch next is whether the administration ties tariff rates to the existing price cap mechanism, or whether it sets a fixed duty that effectively raises the floor on what Russia can earn from any barrel that enters the U.S. market. The interplay between these two systems—the cap and the tariff—could create a layered enforcement regime that is harder for Moscow to circumvent. The European Union, for its part, has been watching the U.S. tariff discussion with some wariness.
Brussels has maintained its own sanctions regime independently, and any divergence between American and European approaches could create arbitrage opportunities for Russian exporters. For now, the core dynamic remains unchanged: the West wants to starve Russia of oil revenue without starving the world of oil.
Whether tariffs represent a refinement of that strategy or a break from it will depend on the fine print—and on how Moscow adapts.
