Rubio Calls Cuba a Threat to US Security; Havana Rejects Claims as Lies

On May 22, 2026, Secretary of State Marco Rubio stood before cameras and declared Cuba an unacceptable threat to United States national security [1]. One day earlier, President Donald Trump had raised the specter of military intervention against the island nation of 11 million people, saying previous presidents had considered it "for decades" but that "it looks like I'll be the one that does it" [2]. Across the Florida Straits, Cuba's Foreign Minister Bruno Rodríguez fired back on social media, accusing Rubio of lying "to instigate a military aggression that would provoke the shedding of Cuban and American blood" [3].

The exchange is the sharpest public confrontation between Washington and Havana in decades. It arrives at a moment when Cuba is experiencing what the United Nations has called a potential humanitarian collapse — with daily blackouts exceeding 20 hours across much of the country — and when the Trump administration's "maximum pressure" campaign has restricted Cuba's fuel imports by an estimated 80 to 90 percent [4]. The question at the center of this dispute is whether Cuba genuinely threatens the most powerful military on earth, or whether the threat narrative serves other purposes entirely.

The Intelligence Case: What the US Government Cites

Rubio's threat designation rests on two pillars: Cuba's hosting of foreign intelligence operations and its relationships with US adversaries.

The evidence for intelligence activity is not entirely speculative. The Center for Strategic and International Studies (CSIS) published satellite imagery analysis identifying at least four likely Chinese signals intelligence (SIGINT) collection sites in Cuba [5]. The largest, near the town of Bejucal overlooking Havana, has undergone significant upgrades over the past decade. Satellite imagery from April 2025 showed excavation work for a large circularly disposed antenna array (CDAA), a type of installation associated with intercepting radio communications [6]. In 2023, US officials acknowledged that China has operated spy facilities on the island since at least 2019, following reporting by the Wall Street Journal [5].

Russian intelligence ties also have a documented history. The former Lourdes SIGINT complex outside Havana — one of the Soviet Union's most important overseas listening posts — was officially closed in 2001. But reporting from The Insider in 2023 suggested the site, now housing the University of Informatic Sciences, has again become a hub for Russian intelligence personnel [7]. In June 2024, Russia dispatched a naval flotilla to Cuba that included a nuclear-powered submarine equipped with Zircon hypersonic missiles [7].

Cuba's espionage operations against the United States have produced real damage. Ana Belén Montes, a senior analyst at the Defense Intelligence Agency, spied for Cuba for 17 years before her arrest in 2001. She revealed the identities of four undercover American intelligence officers and the existence of a classified satellite program [8]. More recently, former US Ambassador Victor Manuel Rocha pleaded guilty to acting as a Cuban agent for decades, in what prosecutors called one of the highest-reaching infiltrations in US diplomatic history [9].

These cases are verified. But several former intelligence officials from both Republican and Democratic administrations have argued that Cuba's intelligence activities, while real, do not amount to the kind of threat that justifies the "state sponsor of terrorism" label or military confrontation. Fulton Armstrong, a former CIA national intelligence officer for Latin America, has described the terrorism designation as "bogus," and the "consensus position" within the intelligence community has long held that Cuba does not sponsor terrorism in the statutory sense [10].

Cuba's Military: Threat or Paper Tiger?

Cuba's Revolutionary Armed Forces (FAR) field approximately 49,000 active troops, with a defense budget estimated at $129 million [11]. To put that figure in perspective:

Source: Global Military Net / SIPRI

Data as of Jan 1, 2026CSV

Cuba's $129 million defense budget is less than what the US Department of Defense spends in roughly 90 minutes. The country's military hardware consists predominantly of Soviet-era equipment: aging MiG-29 fighters, T-62 tanks, and patrol boats that defense analysts describe as being in severe decline [11]. Fuel rationing has curtailed training flights and mechanized exercises since 2022. US and EU sanctions constrain Cuba's ability to procure spare parts or new equipment [11].

The state sponsor of terrorism designation — which Cuba was first placed on in 1982, removed from in 2015 by the Obama administration, re-added in 2021 by the first Trump administration, briefly removed again by Biden in January 2025, and immediately reinstated by Trump's second administration — is intended for countries that have "repeatedly provided support for acts of international terrorism" [12]. The designation is not meant to address human rights abuses, authoritarian governance, or intelligence activity that lacks a terrorism element [12].

Whether Cuba meets that threshold is disputed. The Biden administration certified in January 2025 that Cuba had not provided support for international terrorism in the preceding six months and had given assurances against future support [13]. The Trump administration reversed that certification within days of taking office.

The Sanctions Toll: 64 Years and Counting

The US economic embargo against Cuba — first imposed in 1962 — is the longest-running trade embargo against any country in modern history. Cuba's government estimates the total economic damage at $1.499 trillion, adjusted for the dollar's value against gold [14]. Between March 2024 and February 2025 alone, Cuba reported material losses of $7.5 billion — roughly $20 million per day [14].

The 2025 UN General Assembly vote on the embargo produced 165 votes in favor of ending it, with only 7 opposed, including the United States, Israel, Argentina, Hungary, and three other nations [14]. That represented a slight erosion from the near-unanimous 187-2 vote in 2024, attributed to US diplomatic pressure on allied governments.

The Trump administration's "maximum pressure" campaign has intensified the embargo's effects. Executive Order 14380, signed on January 29, 2026, declared a national emergency and authorized tariffs on imports from any country supplying oil to Cuba [4]. The practical result, compounded by the US military's January arrest of Venezuelan President Nicolás Maduro — who had been Cuba's primary oil supplier — was a sudden contraction of Cuba's fuel supply estimated at 90 percent [15].

Source: CFR / State Dept

Data as of May 22, 2026CSV

The consequences have been severe. Cuba's energy and mines ministry reported that all fuel reserves were exhausted, with blackouts exceeding 20 to 22 hours daily in more than half the country's territory [16]. On March 16, 2026, the national power grid collapsed entirely [17]. Water supply, refrigeration, communications, and hospital operations have been disrupted. UN Secretary-General António Guterres said he was "extremely concerned" about the situation, warning it could "worsen, or even collapse" [16].

In February 2026, UN human rights experts condemned the executive order as a "fuel blockade" and "a serious violation of international law" [18]. A November 2025 report by UN Special Rapporteur Alena Douhan had already urged the United States to lift sanctions that "do not align with numerous international legal standards" [19].

Proponents of sanctions argue they are necessary to pressure the Cuban government toward political liberalization and to deny resources to a regime that suppresses dissent. Rubio has said: "Cuba has an economy that doesn't work and a political and governmental system that can't fix it" [4]. The administration's stated objective is fundamental political change, though Trump has suggested a "friendly takeover" rather than direct military intervention [4].

The Geopolitical Triangle: China, Russia, and Venezuela

Rubio's central argument for designating Cuba a threat is its role as a platform for Chinese and Russian operations in the Western Hemisphere. The SIGINT sites documented by CSIS lend this claim tangible evidence. A May 2025 House Homeland Security Committee hearing examined "new evidence of potential CCP surveillance infrastructure in Cuba" [6].

But foreign policy analysts have noted an asymmetry in this framing. Cuba's relationships with China and Russia have deepened in direct proportion to its economic isolation by the United States. After the collapse of the Soviet Union in 1991 — which had subsidized Cuba's economy to the tune of roughly $4-6 billion annually — Havana spent a decade in severe economic crisis before turning to Venezuela's Hugo Chávez for subsidized oil. When Venezuelan oil deliveries collapsed alongside that country's economy, and as US sanctions tightened, Cuba turned increasingly to China and Russia [20].

Chinese President Xi Jinping approved $80 million in financial assistance to Cuba and donated 60,000 tons of rice as the 2026 crisis deepened [21]. Russia and China issued a joint statement reaffirming their commitment to cooperation with both Cuba and Venezuela [22].

The question that divides analysts is whether these relationships represent opportunistic alliances born of necessity or a coordinated strategic threat. William LeoGrande, a Cuba policy scholar at American University, has argued that maximum pressure pushes Cuba further into the arms of US adversaries, creating a self-fulfilling prophecy [23]. Russia's own capacity for Western Hemisphere engagement has been constrained by the costs of its war in Ukraine, making its Cuba activities less a strategic offensive than a symbolic gesture, according to analysts at the Council on Foreign Relations [24].

Hardliners counter that the intent behind the alliance matters less than its effect: Chinese SIGINT capability 90 miles from Florida is a concrete security concern regardless of what drove Cuba to accept it.

The Raúl Castro Indictment: Justice or Escalation?

The timing of Rubio's threat declaration was not incidental. One day earlier, on May 20 — Cuban independence day — the Department of Justice unsealed an indictment of former Cuban President Raúl Castro on four counts of murder, one count of conspiracy to kill US nationals, and two counts of aircraft destruction [25].

The charges stem from the February 24, 1996, shootdown of two unarmed civilian Cessna aircraft belonging to Brothers to the Rescue, a Cuban-American exile organization. Cuban MiG-29s fired missiles at the planes just north of Havana, beyond Cuban airspace, killing four men — three US citizens and one permanent resident. Castro, then Cuba's defense minister, is alleged to have ordered the attack [25].

The indictment had been returned on April 23 but was unsealed on a date chosen for its symbolic resonance [25]. Acting US Attorney General Todd Blanche declined to explain the timing. Castro, 94, is not in US custody, and Cuba does not extradite its citizens. Whether the indictment represents a genuine pursuit of justice for the victims' families or a pressure tactic is a matter of perspective.

Just days before the indictment, CIA Director John Ratcliffe had traveled to Havana for a rare face-to-face meeting with Cuban officials, including Castro's grandson, Raulito Rodríguez Castro [26]. Ratcliffe delivered Trump's message that the US was "prepared to seriously engage on economic and security issues, but only if Cuba makes fundamental changes" [26]. Cuban officials used the meeting to argue "categorically" that Cuba "does not constitute a threat to US national security" [26].

The Cuban-American Divide

The politics of Cuba policy cannot be separated from Florida's electoral map. Rubio, born in Miami in 1971 to Cuban immigrant parents, built his political career partly on a hardline Cuba stance [27]. As a senator from 2011 to 2025, he was an influential defender of the embargo and a fierce critic of Obama-era normalization efforts [27].

But Cuban-American opinion is not monolithic. A Miami Herald poll from April 2026 found that nearly 70 percent of Cuban Americans in South Florida believe negotiations with the Cuban government would not lead to meaningful change short of regime transition [28]. Support for the embargo has risen above 60 percent in recent polls, reversing a trend toward engagement that peaked around 2016 [28].

However, these figures reflect a specific demographic: South Florida Cuban Americans who skew older, more recently arrived, and more conservative. A majority are registered Republicans, outnumbering Democrats three-to-one [28]. Polling among younger Cuban Americans and the broader Latino electorate in Florida has shown more support for normalization [29]. The Latino Decisions polling firm has found that a "large majority" of Cuban Americans support normalizing relations when the question is framed that way [29].

Critics of Rubio's approach argue his positions reflect the electoral math of Florida's conservative Cuban-American base rather than a dispassionate geopolitical analysis. His 2016 presidential primary loss in Florida — where he failed to consolidate the Cuban-American vote — reportedly pushed him toward a harder line upon his return to the Senate [27]. Defenders respond that Rubio's family history gives him genuine insight into the Cuban government's nature, and that electoral incentives do not invalidate the substance of his arguments.

Cuba's Rebuttal: What Havana Says Rubio Gets Wrong

Foreign Minister Rodríguez has identified several specific claims by Rubio that he says are false. Cuba's government argues that the US blockade — not government mismanagement — is the primary cause of the island's economic crisis [3]. Rodríguez has pointed to the fuel import restrictions and tanker seizures as direct evidence of American economic warfare [3].

On the terrorism designation, Cuba has consistently maintained that it does not support international terrorism and that the label is used as a political tool rather than an evidence-based assessment. During the May 14 meeting with CIA Director Ratcliffe, Cuban officials said they "categorically demonstrated" that Cuba poses no national security threat [26].

Independent assessments offer partial support for both sides. The UN's human rights apparatus has broadly agreed with Cuba that the sanctions regime causes disproportionate harm to civilians [19]. On the intelligence question, however, the CSIS satellite imagery analysis provides evidence that Cuba has permitted foreign intelligence infrastructure that the US legitimately views with concern [5]. Where the truth lies between "existential threat" and "manufactured pretext" depends heavily on how one weighs espionage facilities against a $129 million defense budget.

The Vietnam Question: What Normalization Might Look Like

If the US were to normalize relations with Cuba, what would happen to the threats Rubio cites? Vietnam offers a relevant precedent. The US fought a decade-long war against Vietnam, imposed a trade embargo that lasted until 1994, and normalized diplomatic relations in 1995. Today, Vietnam is a significant US trading partner and a strategic counterweight to Chinese influence in Southeast Asia [30].

A March 2026 analysis in The Diplomat argued that Vietnam could serve as a diplomatic bridge between the US and Cuba, noting that engagement with a socialist state "can evolve into a stable and mutually beneficial relationship" [30]. Proponents of normalization argue that Chinese intelligence facilities in Cuba exist partly because Cuba has no economic alternative to offering such concessions — and that a normalized economic relationship would reduce Havana's dependence on Beijing and Moscow.

Skeptics counter that Vietnam's trajectory was shaped by unique factors — including its own rivalry with China — that do not apply to Cuba, and that the Castro government has shown no willingness to make the political concessions that accompanied Vietnam's economic opening.

The debate remains unresolved, but the historical record suggests that isolation and maximum pressure have not eliminated the security concerns the US cites. Cuba has hosted foreign intelligence operations throughout the embargo's 64-year history. Whether engagement would produce different results is a question the current administration has shown no interest in testing.

What Comes Next

The immediate trajectory points toward further escalation. Trump has threatened military action. Rubio has said the chances of a peaceful agreement are "not high" [2]. Cuba's grid has collapsed three times in 2026. And an island of 11 million people is experiencing blackouts that shut down water systems, hospitals, and food storage for the majority of each day.

The humanitarian costs are borne almost entirely by ordinary Cubans — including the families of the estimated 2.5 million Cuban Americans in the United States, many of whom send remittances that current restrictions have made increasingly difficult to deliver. Whether those costs advance US security or undermine it is the question that neither Rubio's threat declaration nor Rodríguez's accusations of lies can, on their own, answer.