He's the guy who did Battle of Algiers (1966) and Burn! (1969), this is about ETA'S plot to assassinate the prime minister of Spain during the Franco era.
IDK sounds based - I'm even willing to pay if there's a pay option. All I can find is streams of it in Spanish and I'm too dumb to know an extra language :ooooooooooooooh:
Very easy to find Spanish speakers. You could get one of them to watch it for you and give you the general idea