Fidel's friend? (5)
(Other definitions for amigo that I've seen before include "Mexican friend" , "Mate in Madrid?" , "Pal from Madrid?" , "China (in Spain's view)" , "Mexican's mate" .)
'fidel's friend' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for che that I've seen before include "Fighter" , "- Guevara, guerrilla" , "- Guevara, Marxist" , "Nickname of Ernesto Guevara" , "-- Guevara, revolutionary" .)