Project 667A, also known as the Dolphin-class submarine, was a Soviet naval initiative developed during the Cold War. It aimed to create a series of nuclear-powered submarines capable of carrying ballistic missiles. The project began in the 1960s and was part of the broader strategy to enhance the Soviet Union's underwater capabilities. The submarines designed under Project 667A featured advanced technology for their time, including improved stealth and missile systems. They played a crucial role in the Soviet Navy and contributed to the balance of power during the tense geopolitical climate of the era.