JFK and the Bay of Pigs; on the brink of total war during Cuban Missile Crisis; early Vietnam; JFK's attempts at peace with Khrushchev; JFK assassinated.

Citizenfour received the Academy Award for Best Documentary Feature at the 2015 Oscars. The film was directed by Laura Poitras concerning Edward Snowden and the NSA spying scandal." In January 2013, Laura Poitras received an encrypted e-mail from a stranger who called himself Citizen Four. In it, he offered her inside information about illegal wiretapping practices of the NSA and other intelligence agencies. Poitras had already been working for several years on a film about monitoring programs in the US, the result of the September 11 attacks. In June 2013, accompanied by investigative journalist Glenn Greenwald and The Guardian intelligence reporter Ewen MacAskill, she went to Hong Kong with her camera for the first meeting with the stranger, who identified himself as Edward Snowden. Several other meetings followed. The recordings gained from the meetings form the basis of the film.

The inside story of how a small band of fanatical jihadi fighters became the world's richest terror army ever. Featuring the first major TV interview with an imprisoned senior leader of the self-proclamed Islamic State, Peter Taylor looks behind its medieval savagery and investigates how it became so fabulously rich and resilient.

Stone opens the episode on Vietnam with a review of American intervention in Latin America. Lyndon Johnson, according to Stone, disregarded JFK’s “memo” about withdrawing troops and instead escalated. The Cataclysm in Vietnam as the war reaches a turning point - there's no going back. The betrayal by Richard Nixon.

'The Coldest War': With the polar ice caps shrinking due to global warming, new trade routes are being exposed, along with billions of dollars' worth of natural-resource reserves. The five nations bordering the Arctic are readying themselves to fight for it. The problem is that there's one non-NATO country that already considers itself rightful owner of the region: Russia. With Vladimir Putin's recent military annexation of Crimea, there's a definite possibility its aggressions will boil over, returning the international community to precarious Cold War footing. We will head north to witness NATO forces participating in the largest polar military exercise in history. 'Heroin Warfare': Since the U.S. occupation of Afghanistan, heroin production in the region has skyrocketed, making the country the number-one producer by a large margin. Though Iran, Afghanistan's neighbor, is an ultraconservative country, Afghan heroin flowing across the border has actually caused Iran to have the worst heroin use problem in the world. Suroosh Alvi gets a rare look inside Iran to meet the suffering heroin addicts, and see how the country is coping with the illegal drug trade.

Jeremy Bowen presents a look back at the creation of the state of Israel, examining the the events leading up to the Israeli war of Independence in 1949, its impact on Arab/Israeli relations and the implications for the Middle East. It's a one hour crash course in some of the underlying causes of the current problems in the Middle East.