Who do you think backed the Nazi coup in 2014? It was the Americans, and the fascists immediately began ethnic cleansing and started a civil war by attacking their own citizens.

Russia is intervening in this civil war started by fascists and imperialists to finally end it. You have a lot to learn about this conflict

Edit: you were the user a couple weeks ago who thought Ukraine was winning and Russia was on the verge of collapse lmao. This person knows nothing about the conflict except what CNN tells them