Yeah, I think I unfortunately can. I drive here almost every day.
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He invaded Ukraine, because he is an imperialist, and he doesn't view Ukrainians as people, most of us at best are misguided Russians to him, the ones who can't be persuaded in stopping being Ukrainians are ought to be killed.
On top of that, everything in Russia's power structure is built on lies and corruption, bottom-up. Nice reporting to make the boss happy. You can imagine that picture on the ground doesn't correlate much with reports on a top-level after all the layers of reporting. Intel lied, they told Ukraine is waiting for a savior and they have a huge network of collaborators. Military lied, "2nd strongest army in the world" etc. Economic block lied etc.
But that is not a madman's behavior. It's barbaric, cruel, absolutely inhumane, but not a madman, just a guy with absolute power, e.g. your typical Russian ruler for the last idk 8 centuries.