Summary

  • President Donald Trump signed an executive order imposing tariffs on goods from countries that sell or provide oil to Cuba, structurally targeting third-party commercial relationships to compress Havana’s energy supply.
  • The executive order design shifts primary compliance pressure onto Mexico, whose state-owned oil company Pemex had previously shipped approximately 20,000 barrels per day to the island.
  • Mexican President Claudia Sheinbaum navigates the pressure through institutional ambiguity, attributing shipment pauses to corporate contract decisions while maintaining a public posture of sovereign humanitarian support.
  • Cuban officials characterize the measure as a brutal act of aggression and coercive blackmail, framing the island as a non-threat subjected to relentless economic warfare.

President Donald Trump signed an executive order Thursday imposing tariffs on goods from any country that sells or provides oil to Cuba, a mechanism designed to compress Havana’s deepening energy crisis by penalizing third-party suppliers. The order places immediate structural pressure on Mexico, which has served as a primary oil lifeline for the island, forcing Mexican institutions to navigate between U.S. trade penalties and sovereign commitments to Havana. As physical oil flows demonstrate a significant decline, the policy has triggered a diplomatic collision, with Cuban officials condemning the measure as coercive aggression while the Mexican government manages the fallout through a posture of contractual ambiguity.

Mechanism and Structural Pressure

President Trump signed an executive order imposing tariffs on “any goods from countries that sell or provide oil to Cuba.” The order’s design applies U.S. trade penalties to third-party commercial relationships rather than to the target state directly. The Associated Press reported the order “could put primary pressure on Mexico,” which the AP identified as an oil lifeline for the island. The order’s reach is formally open to any third-party oil supplier; Russian and Venezuelan suppliers already face separate U.S. sanctions regimes, while Mexican suppliers had been operating inside a distinct diplomatic channel until the order. The structure of the executive order functions as a third-country-tariff design; the supplied materials do not name a specific scholar, institution, or documented source characterizing the policy under a formal secondary-tariff framework.

Cuban reliance on “foreign assistance and oil shipments from partners including Mexico, Russia and Venezuela” is being compressed from multiple sides. U.S. action against Venezuela’s Maduro government is “also altering the flow of fuel to Cuba,” according to the AP. Mexico’s state-owned oil company Pemex shipped nearly 20,000 barrels of oil per day to Cuba from January through Sept. 30, 2025. After a later period began, the figure fell to about 7,000 barrels per day, according to Jorge Piñon of the University of Texas Energy Institute, who tracks shipments using satellite technology.

The relationship structure underpinning this pressure involves several interconnected nodes. The executive order creates conditional tariff exposure for Mexico, where continued oil shipments to Cuba could trigger tariff costs on Mexican goods entering U.S. markets. Pemex operates as the institutional supplier whose contract-framed shipment decisions sit between Mexican sovereign policy and Cuban demand. Cuba’s dependency on alternative suppliers like Russia and Venezuela is diminishing as upstream U.S. pressure on Venezuela alters fuel flows. The U.S. maintains a pre-existing sanctions regime against Venezuela and Maduro that partially explains the Cuban energy squeeze the new order adds to. Formal diplomatic communication continues between Sheinbaum and Trump, who spoke by phone Thursday morning, with Sheinbaum stating they did not discuss Cuba. The institutional gap between Pemex’s corporate operations and Mexican sovereign policy anchors the government’s public posture.

Institutional Ambiguity and Mexican Posture

In Mexico, uncertainty over the practical effect of U.S. pressure has played out in official statements characterized by institutional ambiguity. On Tuesday, Sheinbaum said Pemex had at least temporarily paused some oil shipments to Cuba, describing the pause as a “sovereign decision.” On Wednesday, Sheinbaum stated she had not described a complete “suspended” stop to “humanitarian aid” and attributed shipment timing to Pemex contracts. “So the contract determines when shipments are sent and when they are not sent,” Sheinbaum said.

This Tuesday-to-Wednesday progression operationalizes institutional ambiguity: corporate commercial decisions framed around Pemex contracts are separated from sovereign political decisions marked by “sovereign decision” language, preserving the formal appearance of autonomy while the underlying physical flow is shifting. The AP reported that Sheinbaum was “vague when asked about shipments” and “avoided clarifying details” in her morning press briefings.

Sheinbaum reported that Mexico’s foreign affairs secretary discussed with U.S. Secretary of State Marco Rubio that it was “very important” for Mexico to maintain its humanitarian aid to Cuba, and that Mexico was willing to serve as an intermediary between the U.S. and Cuba. The AP noted that the ambiguity in the signals from Mexico underscored how much pressure the Trump administration’s moves are placing on Latin American governments.

How This Is Being Framed

The diplomatic gap the executive order operates inside is defined by contrasting characterizations of the underlying threat. President Trump described Cuba as a “failing nation.” When asked by a reporter whether he was trying to “choke off” the island, Trump responded that the phrase was “awfully tough” and said, “I’m not trying to, but, it looks like it’s something that’s just not going to be able to survive.”

Cuban officials characterize the measure as coercive aggression. Foreign Minister Bruno Rodríguez described the tariff threat as a “brutal act of aggression against Cuba and its people,” accusing the United States of using “blackmail and coercion to try to force other countries to join its universally condemned blockade policy against Cuba.” Cuban Deputy Minister of Foreign Affairs Carlos F. de Cossio, writing on the social media platform X, said the United States was tightening “its Cuban blockade after ‘the failure of decades of relentless economic warfare’” and attempting to “force sovereign states” “to decide whether to forgo their right to export their own fuel to Cuba.”

Cuban state-media framing offers a contrasting defense of the island’s posture. Commentator Jorge Legañoa on Cuban state television said Cuba was “not a threat” and characterized the country’s approach as focused on fighting gangs and preventing drug trafficking. The U.S. characterization of a failing nation facing survival pressure and the Cuban characterization of a non-threat focused on domestic security operations mark the diplomatic divide.

Mexican official comments do not adopt the Cuban framing, relying instead on a technical-contractual register. Sheinbaum’s rhetoric locates shipment timing inside Pemex contracts and “sovereign decision” language, distinct from the Cuban regime’s blockade-and-aggression register.

What Happens Next: Consequences and Sequel

The executive order’s structure presents supplying nations with a choice between access to the U.S. import market and energy exports to Cuba. An operational gap remains on the U.S. side regarding how the government will identify and quantify supplying-country cargoes, a measurement problem that Piñon’s satellite-tracking methodology addresses in the open-source data environment.

On the island, the physical consequences of the energy compression are already manifesting. The AP reported that some drivers sat in long lines for gasoline this week, uncertain about what might come next as the executive order’s reach and practical enforcement remain uncertain.

Analytical techniques used in this piece

This analysis applies the methods below. Each links to a short, plain-English explainer you can read and reuse.

Domain Induction
Builds a working mental model of a domain from the ground up.
Quick Orientation
A fast lay-of-the-land read of an unfamiliar domain.
Relationship Mapping
Extracts the network of ties among people, institutions, and entities.
BATNA
Your best alternative to a negotiated deal — the walk-away that sets your leverage (Fisher & Ury).
Supply & Demand
Price and quantity settle where what buyers want meets what sellers will offer.