The ultimate goal is to get rid of Putin and then its on to Xi Jinping. From Finian Cunningham at strategic-culture.org:

Interview
Question: The U.S. Congress is set to pass a Lend-Lease Act that will greatly increase the supply of weapons to Ukraine purportedly to help defend that country from “Russian aggression”. This is while negotiations are underway between Ukraine and Russia to find a peace settlement to the conflict. Is Washington trying to strengthen Kiev’s negotiating hand or is the United States aiming to prolong the war?
Bruce Gagnon: Using the 2019 Rand Corp study called ‘Overextending and Unbalancing Russia’ as a guide, the U.S.-NATO obviously do not want negotiations between Ukraine and Russia to flourish. Their interest is in creating a festering sore along Russia’s border forcing Moscow to spend more of its national treasury on the military and on rebuilding the massively destroyed Russian-ethnic Donbass region in eastern Ukraine. The Donbass destruction was largely due to Ukrainian army shelling for over eight years since the U.S.-orchestrated coup in Kiev in 2014.