Ma Dong-seok, aka Don Lee, is poised to become Hollywood's next big international breakout. He's already one of the most popular actors in South Korea with bonafide worldwide cinephile cache thanks to standout roles in Korean hits like The Good, the Bad and the Weird and Train to Busan, but with an MCU role in The Eternals on the horizon, he's on track to reach a bigger audience than ever before. And then there's The Gangster, the Cop, the Devil. Sylvester Stallone's production company already scooped up the 2019 South Korean thriller for an …