No. I can’t think of any other time Russia has gone after neighbors. Maybe you missed the change from the Soviet union to Russia.
And yes it was very bad. Grosny was razed.
If you had seen the videos of Chechens sawing off fingers of a six yr old they had kidnapped from Moscow, along with many others, you might understand Russian anger at the time.
I was in Moscow, in fact hitchhiking a lot with a 3 yo, at the time.
Things don’t happen in a vaccuum, and Russia has reasons for their behavior. I guess we do also for the numerous wars we have instigated around the world.