White House officials alerted members of Congress to the Russian move on Wednesday. 

The deployment signals Russia's capacity to operate globally while still fully engaged its third year of war in Ukraine. "This is about Russia showing they are still capable of some level of naval power projection," the official said. "We should expect more of this activity going forward." In March, Ukraine claimed it had either sunk or disabled a full third of Russia's ships in the Black Sea.

CBS News reports that long-range Russian bombers will rendezvous with the ships for combined naval and air maneuvers. Such exercises are not without precedent: Russia conducted similar combined-arms Caribbean maneuvers in 2019, and had a streak of sending ships into the Western Hemisphere at least annually from 2013 to 2020. Following the summer exercises, Russia is expected to engage in a worldwide naval exercise this fall, sources tell CBS. 

The Pentagon is tracking a "handful" of ships and support craft that are expected to reach Caribbean waters in the upcoming weeks. US analysts speculate that the flotilla will make port calls in both Cuba and Venezuela. Cuba's likely relishes the opportunity to host the Russian warships: Last year's docking of a US nuclear submarine at Guantanamo Bay Naval Base ruffled feathers in Havana, with the Cuban government calling it a "provocative escalation."

"Clearly, [the Russians] are unhappy — needless to say — with our support for Ukraine and support for our NATO allies," the official said. Last week, the Biden administration quietly gave Ukraine the green light to use US weapons to strike targets inside Russia. That marked a major policy reversal, as such strikes had previously been barred as too escalatory.