@kegill the answer is simple: because it's simply not an option on the table to return to the previous borders.
There has been no workable plan for forcing Russia to return to the other boarders. That milk has been spilt.
That's why the victim needs to hand over territory, at least for now. Because there is no realistic alternative on the table.
@volkris
That’s Trump’s appeasement. It didn’t work with Hitler and it won’t with Putin.