SUM OF ALL FEARS
"We are now in a world where we're facing multiple nuclear competitors, multiple states that are growing, diversifying and modernizing their nuclear arsenals and also, unfortunately, prioritizing the role that nuclear weapons play in their national security strategies," said Richard C. Johnson.
Adjustments to the 2022 Nuclear Posture Review may be required to sustain the ability to achieve nuclear deterrence, in light of enhanced nuclear capabilities of China and Russia and possible lack of nuclear arms control agreements after February, said Johnson,
https://www.defense.gov/News/News-Stories/Article/Article/3975117/dod-adjusts-nuclear-deterrence-strategy-as-nuclear-peer-adversaries-escalate/