The State Department added Unión Cuba-Petróleo, Cuba’s state-owned oil and gas monopoly, to the Office of Foreign Assets Control’s Specially Designated Nationals List on June 11. Secretary of State Marco Rubio said the move targets the entity responsible for controlling all oil production, refining, and distribution on the island.

The designation falls under Executive Order 14404, signed by President Trump on May 1, which expanded sanctions on Cuban government officials and agents. In practical terms, any US person doing business with CUPET now faces potential criminal liability, and any CUPET-linked property touching the US financial system gets frozen.

Why CUPET, and why now

The executive order specifically cited the regime’s practice of prioritizing fuel for political elites over ordinary citizens.

Treasury also sanctioned President Díaz-Canel and members of his inner circle on the same day. The combined action represents one of the most aggressive sanctions packages aimed at Havana in recent memory.

Cuba is already deep in an energy crisis. Daily energy deficits have reached thousands of megawatts, triggering rolling blackouts across the island. US curbs on Venezuelan oil shipments, historically Cuba’s energy lifeline, have made the situation dramatically worse. Adding CUPET to the SDN List effectively closes another door on the regime’s ability to secure fuel through any channel that touches the dollar-denominated financial system.

The crypto angle: necessity, not novelty

Cuba formalized the use of cryptocurrencies for payments through Central Bank regulations established between 2021 and 2022. That wasn’t some forward-thinking fintech play. It was a survival mechanism. When your banking system is cut off from SWIFT, correspondent banks won’t touch you, and Western Union pulled out years ago, digital assets become less of an experiment and more of a utility.

No specific cryptocurrencies were named in the CUPET sanctions announcement, and there’s no indication the designation directly targets digital asset flows. But each new layer of financial isolation increases the demand for alternative rails, and crypto is the most accessible one available to Cuban citizens trying to receive remittances from family abroad.

That acceleration creates a compliance headache for crypto exchanges and DeFi protocols. OFAC’s SDN List applies to all US persons regardless of the medium of exchange. Sending USDC to a CUPET-linked wallet carries the same legal risk as wiring dollars to a CUPET bank account. Platforms that fail to screen for sanctioned entities face enforcement actions, as Tornado Cash users learned the hard way.

What this means for investors

Cuba’s formalization of crypto payments between 2021 and 2022 offers a potential template. Other nations facing escalating US economic pressure may look at Havana’s playbook and decide that regulatory frameworks for digital assets are preferable to total financial isolation.

Heightened enforcement attention on sanctioned-nation crypto flows typically leads to tighter compliance requirements across the board. Exchanges operating in the US or serving US customers may preemptively restrict services to entire regions, reducing liquidity and access.

The DeFi sector faces a particular tension here. Decentralized protocols can’t easily implement SDN screening the way centralized exchanges can. That makes them natural destinations for sanctioned-nation users, which in turn makes them natural targets for regulators. Investors in governance tokens for major DeFi protocols should be watching how these platforms respond to the expanding sanctions landscape, because the regulatory risk isn’t hypothetical anymore.