What nation wound up with most of its nuclear arms?

Russia emerged with the majority of the nuclear arms following the dissolution of the Soviet Union in 1991. At that time, around 30,000 nuclear warheads were dispersed among the former Soviet republics, but Russia retained approximately 85% of these weapons, significantly shaping its military strategy and international standing. The other former Soviet states, such as Ukraine, Belarus, and Kazakhstan, eventually relinquished their nuclear arsenals, leading to Russia being the primary nuclear power in the region.