Easy ? I don't think so. "Humanitarian intervention" ? Ok so now...

Easy ? I don't think so.
"Humanitarian intervention" ? Ok so now all you need to do is demonstrate, explain and prove the grounds on which you seemingly claim Putin's War on Ukraine is justified. I'll wait with bated breath.
The vast majority of UN members certainly didn't think so considering the overwhelming majority vote of the UN General Assembly in condemning Putin's brutal invasion and I expect they would be much better versed in such matters than you....or anyone else here.