I’m struggling to understand the logic of your thinking.
Suppose we left Ukraine empty-handed. What do you think will happen next? What do you think the best case and worst case scenarios are? What if the best-case scenario doesn’t come to pass? Would you regret it if Russia expanded its invasions further?
Why should they be invading any country with refurbished T-62s? And in your precious post you said you were concerned about them using nukes. Which is it?
Why does your care for others begin at NATO borders?
This statement adds nothing to the conversation and doesn’t answer my questions. And in my experience, a person who can’t answer pointed questions usually understands the situation less than the ones who can.
I don't have a duty of care to every corrupt foreign country with complex, long-running border disputes and interests orthogonal to my own. Does that answer your pointed question?
Suppose we left Ukraine empty-handed. What do you think will happen next? What do you think the best case and worst case scenarios are? What if the best-case scenario doesn’t come to pass? Would you regret it if Russia expanded its invasions further?