I think number 1 is the essential point for anyone supporting democracy. Ukrainians, not Russians, decided who they elect as their leaders (1) and which organizations they want to join. It is depressing to hear people in democracies arguing otherwise.
As for point two: Yes it is also massively in the interest of democracies, that Ukraine wins and Europe is strengthened.
I think Stoltenberg summed up it up nicely in (2)
>So supporting Ukraine is not only the morally right thing to do.
It is also in our own security interest.
(1) Queue Russian non-sense about Maidan being a western coup.
As for point two: Yes it is also massively in the interest of democracies, that Ukraine wins and Europe is strengthened.
I think Stoltenberg summed up it up nicely in (2)
>So supporting Ukraine is not only the morally right thing to do. It is also in our own security interest.
(1) Queue Russian non-sense about Maidan being a western coup.
(2) https://www.nato.int/cps/en/natohq/opinions_212041.htm