I thought it was the renegade Marxist Spanish prosecutor who brought the case against Pinochet on behalf of "all tortured and murdered hispanic peoples".
I don't know Spanish legal procedure, but it was a judge (Balthazar Garzon, or something like that) whose rulings were what caused Gen. Pinochet to be detained in the U.K. And I think it was he to whom the Cubans went in an attempt to get a similar warrant issued for Castro.
Fat chance.