> Those were sovereign countries under communist single party rule and allied with the USSR.
They were countries conquered and occupied by USSR troops, with USSR military bases in them to guarantee obedience. There were local rulers, sure, but major decisions were consulted with Moscow. Many decisions just were out of question, because it was obvious that Moscow would not approve and it may end in a military intervention (as in happened in Hungary and Czech Republic). So no, I would not describe them as "sovereign countries". The proper term is something like "puppet state".
They were countries conquered and occupied by USSR troops, with USSR military bases in them to guarantee obedience. There were local rulers, sure, but major decisions were consulted with Moscow. Many decisions just were out of question, because it was obvious that Moscow would not approve and it may end in a military intervention (as in happened in Hungary and Czech Republic). So no, I would not describe them as "sovereign countries". The proper term is something like "puppet state".