With the Trump administration threatening to redirect America's foreign defence spending from Ukraine and Europe to other parts of the world, European leaders are grappling with what the future of their security could be without US support.

Jonny Dymond is joined by the BBC's diplomatic correspondent James Landale. They discuss the threat of Russia and how Europe could defend its borders if the United States were to withdraw its money and manpower from the continent.

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Producers: Alice Aylett Roberts, Eleanor Sly and Laurie Kalus

Sound engineer: Gareth Jones

Assistant editor: Sergi Forcada Freixas

Senior news editor: China Collins