That is just one of the reasons to start negotiations.
The Russo–Ukrainian war continues. Although Russia’s President Vladimir Putin has indicated an interest in negotiation, the Biden administration has escalated the fighting, most recently by permitting the use of American weapons to strike targets within Russia. Europe’s vocal war party is pushing for even more.
The war has escalated into a nightmare for the people of Ukraine. Hundreds of thousands of their soldiers have been killed or wounded, infrastructure and environment have been devastated. Ukraine’s chances of achieving any of its hoped for goals are receding and more land is being lost every day.
Furthermore, many of the dynamics that led to the start and the continuation of the war are making it especially difficult to get out of it.