How about not recognition of that land lost but accept NATO expand its territories covered to the remaining part of the Ukraine.<p>The problem is what if Ukraine like Turkey did something not agreeable by its NATO Members then e.g. to recover what is theirs.<p>But without NATO membership, the push to peace is just a stepping stone for Russia to get another piece then another piece then another piece of Ukraine land. The logic will always apply until there is no more Ukraine land.<p>After all, the Russia strategy to use arms not politics to take over and if successful, where is the end to this. I am not sure this wishful thinking can help.<p>For the longer term, I mean really long term after the death of Putin (unless cloning of emperor is viable), that is when the problem can be solved?