The aerial standoff over the Florida Strait has intensified. On Monday, US fighter jets were scrambled to intercept a formation of Russian and Cuban aircraft operating in international airspace near the island of Cuba. The incursion, described by the Pentagon as “unscheduled but routine,” occurred as RAF intelligence assessments warn of a resurgent Cold War flashpoint in the Caribbean.
The intercept involved four US F-22 Raptors shadowing a pair of Russian Tu-160 Blackjack bombers and two Cuban MiG-29s. The aircraft remained in international airspace, but their proximity to US naval assets at Guantánamo Bay and Key West is a pointed reminder of the geopolitical faultline that runs through the Caribbean. “This is not a rehearsal,” said Air Vice Marshal James Thornton, former director of the UK Strategic Command. “The Caribbean is the soft underbelly of US national security, and Russia is probing it with increasing confidence.”
RAF intelligence, shared with allied partners, has noted a pattern of increased Russian naval activity in the region, including the deployment of a nuclear-powered submarine to Havana harbour last month. The submarine, a Yasen-class vessel capable of carrying Kalibr cruise missiles, was tracked by US sonar arrays from the moment it passed the GIUK gap. Its presence so close to the Florida coast is a direct challenge to the Monroe Doctrine, which has governed US hegemony in the Americas since 1823.
The data is stark. Since 2020, Russian naval deployments to the Caribbean have increased by 230%, according to open-source intelligence. The air patrols have become more aggressive, with bombers approaching US airspace at speeds and altitudes that reduce reaction time. “Think of this as a pressure test on a reactor vessel,” said Dr. Elena Rojas, a geostrategic analyst at the Centre for Strategic and International Studies. “Each probe is small, but cumulative, they weaken the integrity of the system.”
The physics of deterrence is shifting. The US responded by increasing sortie rates at Homestead Air Reserve Base and deploying a second aircraft carrier to the Atlantic. But the message from Moscow is clear: the days of uncontested US dominance in the Americas are over. Russia has rebuilt its long-range aviation capability, and it is using Cuba as a forward operating base, albeit unofficially.
The biosphere of international law is being poisoned. The Intermediate-Range Nuclear Forces Treaty is dead. The Open Skies Treaty is dead. The only remaining arms control agreement, New START, is set to expire in 2026. Without these treaties, the Arctic, the South China Sea, and now the Caribbean become theatres of raw power.
The energy transition is also implicated. Cuba sits on potential offshore oil reserves estimated at 20 billion barrels. Russian state-owned Rosneft has signed exploration agreements with Havana. A major discovery would transform Cuba’s energy security and tilt the regional balance.
For the people of Florida, the reality is less abstract. The sound of F-22 afterburners at 30,000 feet is a reminder that the geopolitical permafrost is thawing. And as with the physical kind, the process is non-linear. A small increase in temperature can trigger a sudden collapse of ice shelves, or in this case, an escalation.
The RAF has not called for a change in UK posture, but they are watching. The British Overseas Territories in the Caribbean, including the Cayman Islands and the British Virgin Islands, are vulnerable to any spillover. “We are in a period of calm urgency,” said a senior RAF source. “The data points are clear. It is not yet a crisis, but the derivative is heading in that direction.”
For now, the sky over the Florida Strait is empty again. But the radar traces remain on record. The question is how many more probes will occur before the breakstress is exceeded.
