Richard N. Haass (President of the Council on Foreign Relations) would like to see as many Russians as possible killed in an Ukrainian offensive and start negotiating afterwards. (do not know wether he wants Ukrainian soldiers killed as well)
"Given the likely trajectory of the war, the United States and its partners need to begin formulating a diplomatic endgame now."
"Ukraine’s Western supporters would propose a ceasefire as Ukraine’s coming offensive reaches its limits"
https://www.foreignaffairs.com/ukraine/russia-richard-haass-...