One of Russia's most concerning new submarines has pulled up off the coast of Cuba ahead of planned military exercises in the area.

The Kazan, a nuclear-powered cruise missile submarine, is one of a relatively new class of subs that has worried the US and Western militaries for years due to its stealth and strike capabilities .

Three Russian ships, as well as the Kazan, arrived in Cuba on Wednesday for a five-day official visit before a large, simultaneous air and maritime exercise in the Caribbean. The deployment includes the Admiral Gorshkov frigate, which is armed with Zircon hypersonic missiles, another challenge for Western militaries.

While US officials have said they're monitoring the vessels and don't anticipate any imminent danger in the region, the Kazan's arrival is notable. US and NATO officials have long expressed anxiety over the capabilities of the Kazan and other subs like it.

The Russian Navy Northern Fleet Yasen-class nuclear-powered submarine Kazan arrives at its permanent deployment base in Severomorsk on Russia's Arctic coast, June 1, 2021.


Russia's Yasen-class submarines, like the Kazan, are formidable threats within Russia's navy, which has long boasted a rather capable submarine fleet. The Russians began work on the class during the Cold War , and the first sub in the class, the Severodvinsk, was commissioned late in 2013.

Around the time the Severodvinsk came about, Naval Sea Systems Command's program executive officer for submarines said at a naval symposium that going forward, the US would "be facing tough potential opponents," adding that "one only has to look at the Severodvinsk."

After the Severodvinsk was commissioned into the Russian navy, later submarines featured updated designs , designated as part of the Yasen-M class. The Kazan was the second sub of the class but the first of the new upgraded subs. It is noticeably smaller and features a quieter nuclear reactor.

The subs' newer, more advanced features make them quiet, difficult to track, heavily armed, and capable of attacks against land- and sea-based targets with little to no notice. These warships can carry Oniks and Kalibr cruise missiles and, at a later date, the new Zircon missiles.


The shift in capability with the emergence of the Yasen-M class submarines suggested a change in use. Per a 2021 Royal United Services Institute analysis , the Kazan's "capacity to launch a range of anti-ship and land attack missiles" suggests that "long-range strike missions appear to be superseding sea lines of communication (SLOC) interdiction as a primary task."

In 2021, US Air Force Gen. Glen VanHerck, head of US Northern Command and North American Aerospace Defense Command, said that the subs "are designed to deploy undetected within cruise-missile range of our coastlines to threaten critical infrastructure during an escalating crisis."

VanHerck, along with other US officials, have said the Yasen-class subs are " on par with ours " and repeatedly warned about the increasing presence of these vessels off of the US coast.