What is the current status of efforts to end the Ukraine-Russia conflict after three years of war?

After three years of conflict, diplomatic efforts with Russia have been virtually nonexistent. According to KT McFarland, former Deputy National Security Advisor, neither the Biden administration, European allies, nor Ukraine have engaged in talks with Russia, instead imposing preconditions before any negotiations can begin. This diplomatic vacuum has resulted in a stalemated war of attrition where Russia is gradually gaining the upper hand. Despite the slow and grinding nature of Russia's advance, McFarland assesses that Russia is ultimately winning the conflict, suggesting that the current approach of refusing dialogue has failed to produce favorable outcomes for Ukraine and its Western supporters.