Federation of American Scientists : Status of World Nuclear Forces [Current update: April 2020]

The number of nuclear weapons in the world has declined significantly since the Cold War: down from a peak of approximately 70,300 in 1986 to an estimated 13,410 in early-2020. Government officials often portray that accomplishment as a result of current or recent arms control agreements, but the overwhelming portion of the reduction happened in the 1990s. Some also compare today’s numbers with that of the 1950s, but that is like comparing apples and oranges; today’s forces are vastly more capable. The pace of reduction has slowed significantly compared with the 1990s. Instead of planning for nuclear disarmament, the nuclear-armed states appear to plan to retain large arsenals for the indefinite future, are adding new nuclear weapons, and are increasing the role that such weapons play in their national strategies.

To read more, https://fas.org/issues/nuclear-weapons/status-world-nuclear-forces/