Max Pearson presents a collection of this week’s Witness History episodes from the BBC World Service.
It's 75 years since the founding of Nato. In 1949, a group of 12 countries formed the North Atlantic Treaty Organization to block the expansion of the Soviet Union.
Professor Sten Rynning, the author of "Nato: from Cold War to Ukraine", talks about some of the most significant moments in Nato's history.
It's 30 years since the beginning of the Rwandan genocide. We hear from one of the survivors. This programme contains disturbing content.
Plus Britain's Mirpuri migration, the origins of the Heimlich Manoeuvre and Britain's first nudist beach.
Contributors: Sten Rynning - Professor of War Studies at the University of Copenhagen Riyaz Begum - migrated from Mirpur to London Antoinette Mutabazi - Rwandan genocide survivor Janet Heimlich - daughter of Dr Henry Heimlich Adam Trimingham - Brighton based journalist David Johnson - nudist
(Photo: British Foreign Secretary Ernest Bevin signs the North Atlantic Treaty. Credit: Keystone/Hulton Archive/Getty Images)
US presidential history special
Why Portugal decriminalised all drugs
CNN and the 24-hour news revolution
British black history special
The Mafia and Italian politics
Blackwater killed my son
Stories of resistance and protest from around the world
Prohibition in India
Inventing James Bond
Margaret Ekpo - Nigeria's feminist pioneer
The siege at Ruby Ridge
Beirut's hotel war
The Second World War in Japan
Adrift for 76 Days
The Million Man March
South Korea's 1980s prison camps
Quarantined in a TB sanatorium
Dealing with economic crisis
Sex trafficking and peacekeepers
Black American History Special
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It is Free
The Modern West
Global News Podcast
The Infinite Monkey Cage
Friday Night Comedy from BBC Radio 4
You’re Dead to Me
Elis James and John Robins