2024 Olympics: how to prevent use of performance-enhancing drugs?

On Friday, the Afghan judoka Mohammad Samim Faizad was provisionally suspended after failing a doping test for a banned steroid. On the Chinese team, 23 swimmers tested positive for a banned substance ahead of the Tokyo Olympics. Recent media reports revealed they were allowed to compete in those Games without being sanctioned. How to prevent doping during the Paris 2024 Olympics? Peter O'Brien interviews Andy Brown, journalist and editor of Sports Integrity Initiative.