The R-29RMU Sineva is a Russian submarine-launched ballistic missile (SLBM) designed for use on the Dolphin-class submarines. It is an upgraded version of the earlier R-29 missile systems and is capable of carrying multiple nuclear warheads. The Sineva has a range of approximately 11,500 kilometers, allowing it to strike targets far from its launch point. This missile features advanced guidance systems and improved accuracy compared to its predecessors. The R-29RMU Sineva plays a crucial role in Russia's strategic nuclear deterrent, ensuring the country's ability to respond to potential threats effectively.