What is necessary for effective negotiations with Russia in the Ukraine conflict?

According to defense analyst Bill Roggio, unless the US and NATO are willing to commit boots on the ground and deploy their own hardware to directly confront Russia, some form of accommodation will be necessary in negotiations. The harsh reality is that Ukraine is outmatched in both manpower and resources, while Russia remains committed to the conflict and continues to gain territory. Without significant Western military commitment, Ukraine faces increasingly difficult circumstances, as Russians are poised to take more ground over time, requiring tough concessions in any peace negotiations.