) there is no soviet empire. The USSR and Russia are 2 very different entities. Russia existed before the USSR and it now exists after the USSR.
Putin said ....“Apparently, it is also our lot to return [what is Russia’s] and strengthen [the country]"
so it appears he wants the USSR back !
he won't negotite on those lands and will allow russian soldiers to die for his imperialist ambitions . (He compared himself to Peter the Great of the russian empire )