Key Points - Russia's Delta IV-class (Project 667BDRM Delfin) nuclear ballistic missile submarines (SSBNs), introduced in the 1980s, remain the backbone of its sea-based nuclear deterrent. -These ...

There have been four iterations of the Delta-class submarines, designed to serve as a key element of the Soviet Union’s nuclear deterrence strategy. At the height of the Cold War between the United ...

While Pentagon and U.S. Navy officials have been sounding the alarm about a resurgent Russian Navy, the Defense Department’s concerns might be somewhat overblown. Though analysts vary in their ...