In many ways, Ukraine to Russia is like Mexico is to the USA. They both harbor powerful criminal interests that openly, without fear of retribution.
While I cannot say everything Russia is doing to Ukraine is justified, I can say, if Putin is just trying to clean up crap just across his border - - I can somewhat understand it. If Ukraine actually cleans up their act (doubtful), then perhaps they'd deserve some assistance from us. Lacking meaningful reforms, then why invest in a shithole???