In the third part of his journey into the history of Christianity, Professor Diarmaid MacCulloch charts Orthodoxy's extraordinary fight for survival. After its glory days in the eastern Roman Empire, it stood right in the path of Muslim expansion, suffered betrayal by crusading Catholics, was seized by the Russian tsars and faced near-extinction under Soviet communism. MacCulloch visits the greatest collection of early icons in the Sinai desert, a surviving relic of the iconoclastic crisis in Istanbul and Ivan the Terrible's cathedral in Moscow to discover the secret of Orthodoxy's endurance.

Witness the most detailed portrait of Putin ever granted to a Western interviewer. This series provides intimate insight into Putin's personal and professional lives, from his childhood under communism, to his rise to power, his relations with four U.S. presidents, and his surprising takes on U.S.-Russian relations today. Oscar-winning filmmaker Oliver Stone was granted unprecedented access to Russian president Vladimir Putin during more than a dozen interviews over two years, with no topic off-limits.