We have multiple hints in the text which lead to Fidel castro and cuba
- in the mountains, just us 3 - Castro fled with Che Guevara and his brother into the Sierra maestro mountains
- stars symbolized castro
- will they find us - cubas president looked for castro when a coup failed
- we have nothing as defense - Castro didn't have any weapons after they fled
- the plan failed should be clear by now
- won at the very end, Castro was president of Cuba and i think the son of his brother is president right now
- as mentioned in the answer Russia supported Cuba against the US