I just uploaded a 5-part series on Substack, available to both free and paid subscribers.
Posts in this series: part 1, part 2, part 3, part 4, part 5. If you want the short version, go to part 5, which has cross-references to the earlier parts.
A PDF of the series is here. (Its page breaks are a bit odd, because InDesign threw a hissy fit.)
8/23/2025 Part 6 (Addendum) is on Putin’s essay of 2021, “On the Historical Unity of Russians and Ukrainians.”