They did not attack without provocation.
Ukraine has been attacking the Donbass region for almost 8 years - killing thousands.
https://en.wikipedia.org/wiki/War_in_Donbas
And those regions officially asked for Russian assistance once Russia acknowledged their autonomy.
Now - I think Russia should NEVER have attacked Ukraine proper.
But this is NOT without provocation.
But the Saudis DID attack in Yemen without any provocation at all.
Oh come on now.
I GUARANTEE that you have made comments about something that is not the direct subject of the thread you are posting in?
Simple question...why are you posting less/not at all about the War in Yemen that has killed FAR more people than this war?