Forgive me if this has been posted or discussed before, but a talk show in Chicago had a historian on this morning. He was discussing Putin's history with Ukraine and mentioned one of Putin's favorite philosophers who was quoted as saying that Ukraine was the "keystone" to the success of the old USSR and must be the keystone in any new Russian Bloc. Putin supposedly adopted this pholosphy.
https://politicalmoonshine.com/2020/02/07/extensive-research-on-the-keystone-ukraine/
Is Ukraine the "keystone" in Q's posts?