What "invasion"?? Are you talking about the Russian rescue operation in Eastern Ukraine??
What's also beyond dispute is the fact that, under any conventional military definition of the term 'invasion', Russia invaded Ukrainian territory.
The above two events are not mutually exclusive.
Who are they rescuing?
Oh, you mean the “rescue operation” that purposely targets, and murders innocent women and children to meet their objective of stealing sovereign land and oil reserves?
Just cause they don’t want a sovereign country to take market share away from their(Russian) oil/gas sales to Europe?
A “rescue operation”-that’s some mental gymnastics there!
Wow!