Stephen Kotkin puts current Russian actions into the context of Russian history. Best article I’ve seen on the subject from an extremely knowledgeable historian. Top photo from here. Access may be subscription-limited, although if you register you may be able to access it.
Michael Krepon makes a start at analyzing deterrence in today’s multipolar world.
The credibility trap. Is that business about redlines and credibility gendered? Only a small part of this article, but I think it sounds like a barroom brawl.
Background on Kaliningrad, the Russian exclave between Poland and Lithuania.
Japan doesn’t want America to apologize for Hiroshima. Apologies between nations are a complex issue, usually better left unsaid. Not at all the same kind of thing as apologies between individuals.