'The Operational Environment and the Changing Character of Warfare' (2019) (updated in 2021) Discussion of its contents has been completely relegated to think tanks and policy planning bodies like the 'Small Wars Journal.'
In a nutshell, it is basically discussing WW3 (without using the term) while describing a world environment of pure chaos, beyond the wildest nightmares of sci-fi.
https://www.govinfo.gov/content/pkg/GOVPUB-D101-PURL-gpo189893/pdf/GOVPUB-D101-PURL-gpo189893.pdf
Pastebin: https://pastebin.com/SXFbxijG
https://www.youtube.com/watch?v=_uNPZKJqbE8