What is referred to by 'castro stalin lenin tito'?

Based on the clue 'castor has an apparent magnitude of 16 this star a...', what is the answer? Based on the clue 'castor pollux theseus accompanied jason on his jo...', what is the answer? Based on the clue 'castoroides giant beavers of the pleistocene grew ...', what is the answer? What is referred to by 'castro overthrows batista'? Based on the clue 'castros 26th of july movement linked with a junta ...', what is the answer? What is referred to by 'casual juries'? Based on the clue 'casual slip on shoes with flaps on the front of th...', what is the answer? Based on the clue 'casually cooly prove that you can spell', what is the answer?