While political wrangling about possible U.S. nuclear arms reductions dominates political discourse, the actual number of U.S. strategic nukes is going up, according to the latest analysis by Hans Kristensen at the Federation of American Scientists:
Over the past six months, the U.S. deployed strategic nuclear forces counted under the New START Treaty have increased by 34 warheads and 17 launchers.
It is the first time since the treaty entered into effect in February 2011 that the United States has been increasing its deployed forces during a six-month counting period.
We will have to wait a few months for the full aggregate data set to be declassified to see the details of what has happened. But it probably reflects fluctuations mainly in the number of missiles onboard ballistic missile submarines at the time of the count.
Russian nukes, meanwhile, are declining.