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)
Storming the Stasi HQ
The Computers for Schools revolution
The book that warned of an end to civilisation
The Soviet invasion of Afghanistan
The Romanian revolution
The Cuban writer who defied Castro
The man who gave his voice to Stephen Hawking
I saw the soldiers who killed El Salvador's priests
Rescuing migrants in the Mediterranean
Britain's secret propaganda war
'Jane' - the underground abortion service
The fall of the Berlin Wall
An environmental history special
Black British history
The birth of the People's Republic of China
Fighting the Islamic State group online
The Cambridge spy network
Conflict timber in Liberia's civil war
The outbreak of World War Two
The Kindertransport children
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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