Ruler of the USSR?
Yes, Mikhail Gorbachev was the last Communist leader of the USSR. Moreover, Gorbachev was the last leader of the USSR, period, as the USSR ceased to exist in 1991 while Gorbachev was in power - and thanks in no small part to Gorbachev's reforms of the late 1980s.
The final leader of the communist soviet union was Mikhail Gorbachev.
the ussr wanted them to stay communist
The first communist leader of the USSR was Vladimir Lenin. Lenin was in power at the time the USSR was formed in December 1922.
"Communist ruler" is contradiction in terms, since communism, by definition, is without government.
cuba have a communist ruler
the Communist Party of the Soviet Union. But in fact it stood for state capitalism not Communism