Okay. How do you get the two sides to come to an agreement? Right now, one side wants the other side to not exist [1], the other side appears to be willing to concede status quo ante bellum.
[1] To be more precise, they have given several conflicting answers as to what they actually want. I personally find this answer to be the most likely to be true, especially given that the other side is willing to agree to the demands implied by several of the other answers, and yet this side is unwilling to accept such agreement.
Negotiation isn't a way out against an aggressor who isn't convinced that you can and will use force otherwise.
What you have then is at best surrender to their current demands and hope they don't decide to see what they can take you for next after that. This isn’t novel territory.
>So you want boots on the ground? Whose? Yours? Your children's?
Boots are already on the ground. Ukrainians childrens boots. They are already fighting the largest land battle in european history since World War II at this very moment. Russia has already taken greater losses than Germany did with the invasion of Poland.
Ukraine's fate is our own. And the longer we pretend this is just another foreign conflict, the more danger we will be in.
So you want boots on the ground? Whose? Yours? Your children's? Do you think that will lead to less bloodshed? Negotiation is the way out.