Since it began in 1983, Frontline has been airing public-affairs documentaries that explore a wide scope of the complex human experience. Frontline's...

Bitter Rivals illuminates the essential history - and profound ripple effect - of Iran and Saudi Arabia's power struggle. It draws on scores of...

Tracing Xi Jinping's defining moments, how he's exercising his power and the impact on China and relations with the U.S.