Excuse me for a one-off useless comment, but a Communist country never existed. USSR was not communist.
Communism is being described as "A communist society would have no governments, countries, or class divisions."[1]
Hence, no rulers. Communism in its essence is a form of Anarchist society.
For most idealistic -isms, I doubt any implementation could exist that would satisfy the -ism's true believers (particularly since those implementations would have flaws that would need to be disclaimed).
Communism is being described as "A communist society would have no governments, countries, or class divisions."[1] Hence, no rulers. Communism in its essence is a form of Anarchist society.
[1] http://en.wikipedia.org/wiki/Communism#Etymology_and_termino...