Eastern Europe has only been on its feet for 20 years. Honestly they have the capability (as the Soviet Union proved) but are filled with corruption.
You're right about Putin though, Russians (as well as Germans) need a strong leader to lead them. Just look at what they accomplished under Stalin.
Belarus is stable because they have a strong leader, Ukraine is in chaos because they lack a strong leader right now.
I hate to say it but Putin isn't strong enough. Soon thing might change