What is the realistic diplomatic approach to resolving the Ukraine-Russia conflict regarding territorial boundaries and security guarantees?

The realistic diplomatic approach involves acknowledging that Ukraine's return to pre-2014 borders is an unrealistic objective in any negotiated settlement. This represents a significant shift from previous positions that supported Ukraine's full territorial integrity, including Crimea and eastern regions occupied since 2014. Regarding security guarantees, NATO membership for Ukraine is not considered a viable outcome of peace negotiations. Instead, any security arrangements must be supported by European and non-European forces, explicitly excluding U.S. troops from deployment to Ukraine. This approach emphasizes burden-sharing with European allies while maintaining American support through other means. This diplomatic framework prioritizes achievable peace over idealistic territorial restoration, focusing on practical security solutions that don't require direct American military presence while still providing Ukraine with meaningful protection through international partnerships.