The Nuclear Notebook is researched and written by Hans M. Kristensen, director of the Nuclear Information Project with the Federation of American Scientists, and Robert S. Norris, a senior fellow with the FAS. The Nuclear Notebook column has been published in the Bulletin of the Atomic Scientists since 1987. This issue’s column examines Russia’s nuclear arsenal, which includes 4,350 warheads that can be delivered via long-range strategic launchers and shorter-range tactical nuclear forces. The Nuclear Notebook is always free-to-access. Read Russian nuclear forces, 2018.