Until recently, Europe felt safe under the US nuclear umbrella. But since Russia invaded Ukraine and Donald Trump was re-elected, transatlantic relations have deteriorated. Experts are calling for Europe to focus more on its own nuclear deterrent. But what options do nations on the continent have?

Cast:Danny Exnar, Jonas Rüegg, Miro Lorenzo Maurer, Irina Schönen:, Maike Bräutigam, Edward Piccin,

Genre:Documentary,

country:Switzerland,

Production:NZZ Format, ZDF/Arte,