From whom?
The United States or China
I would guess they are taking precautions against an attack from one of the ‘stan countries, or the middle east. Seems prudent to me, the genie is out of the bottle, and there is a non-trivial probability of non-state actor detonating a nuke in my lifetime. Non-proliferation can’t work perfectly, forever.
ROP
USA = Great Satam
Russia= Big Satan