'No limits': Russia, China and US enter new nuclear arms race

This week, the New START treaty expires, ending the last remaining major nuclear arms control agreement between the United States and Russia. With no binding limits on the world’s two largest nuclear arsenals and China rapidly expanding its own, many fear the start of a new and dangerous era of proliferation.

On this episode of Battle Lines: Global Health Security, Arthur Scott-Geddes and Sophie O’Sullivan are joined by Darya Dolzikova of the Royal United Services Institute and Matthew Bunn of Harvard Kennedy School to unpack why Donald Trump wants to rebuild America's nuclear stockpile and whether an arms race is already underway.

As the Doomsday Clock edges closer to midnight, how worried should we be?

Producer: Sophie O'Sullivan

Executive Producer: Louisa Wells

Studio Operator: Meghan Searle

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