[AdmSmith]

We would expect to see the Southern Military District’s Buk-M3, its most capable medium-range air defense system, near the border with Ukraine if an invasion was planned in the near future.

https://twitter.com/RALee85/status/1382196119803990017

[AdmSmith]

Options for sanctions escalation

https://www.atlanticcouncil.org/blogs/new-atlanticist/what-if-russia-invades-ukraine-again-consider-these-options-for-sanctions-escalation/