[foverzar]

> But I also don't think any of these things justify invading Ukraine.

Russian intervention was triggered by Kyiv botching the Minsk agreements and terminating ceasefire. That's the prime reason, since Russia is legally bound to provide military aid to Donetsk by the abovementioned agreement. Western propaganda is hard on erasing the side that never supported the coup in Kyiv.

Everything else are just additional grievances, i.e. assuming that the current Ukrainian government is crazy and non-sovereign enough to allow deployment of missiles previously forbidden by the recently dissolved INF treaty.