As of January 2025, Russia possesses approximately 4,309 to 5,459 nuclear warheads according to various reputable sources. The Federation of American Scientists estimates around 5,459 total nuclear weapons, including about 1,700 actively deployed strategic warheads. Other sources put the deployed warheads at about 1,550 to 1,718, with additional warheads kept in reserve, retired, or awaiting dismantlement. Overall, Russia holds the largest nuclear arsenal in the world, with total warheads numbering above 4,300 and possibly over 5,400.