After Trump ordered US nuclear subs into position following Medvedev’s nuclear threat, tensions spiked, reviving the US-Russia submarine rivalry.

The United States maintains a marginal edge in submarine count and global deployment capability, whereas Russia emphasizes strategic presence near the Arctic and NATO frontlines.

Both nations rely heavily on ballistic missile submarines for nuclear deterrence—America with its 14 Ohio-class SSBNs, and Russia with Borei and Delta IV-class vessels.

In fast-attack capabilities, the U.S. boasts cutting-edge Virginia, Seawolf, and Los Angeles-class subs, while Russia counters with the newer Yasen-M and upgraded Akula-class submarines as part of its naval modernization.

The US maintains a tech and deployment edge, but Russia is rapidly closing the gap, signaling a renewed underwater power race.