The sense of due duty to your community beyond your family and your own life. I am not really sure I would have the courage to do that.
To Zverok: respect and good luck. To the rest: support Ukraine.
I wouldn't fight for my country in an offensive war, it's an arbitrary construct that means little to me to but I would fight for my family, my friends and the people around me in a defensive war.
This is what shines through when you see things about the Ukraine in the news, these people are fighting for everything - it's about the maximum level of motivation that a people could have.
I don't know either. I think you can only tell when the time is there.
Coming from a western country, democracy, freedom and economic wealth is all taken for granted. Therefore, I'm not sure everybody would realise what we could lose.
When I look at my Ukrainian colleagues, they don't take that for granted. Their fight for those privileges is very recent, and was still ongoing. They definitely tasted it already.
So now this bastard Kremlin is trying to drag them back in the mud. I think their will to give their kids a prosperous life is higher than the pain they have to go through right now. They know the difference between the two.
They have all my respect, and definitely deserve the democracy and freedom they are fighting for right now.
The thing is, there is no "winning" for Russia. Even if the "special military operation" ends with some kind of agreement and Putin declares a "victory" (which he will no matter what), he and the country will remain a pariah to much of the world, not unlike Qaddafi's Libya.