How should US allies deal with Donald Trump's return? His inauguration, featuring far-right figures, signals a US president-elect who's intent on shaking up alliances and settling scores. Critics warn he could hand concessions to leaders like Binyamin Netanyahu or Vladimir Putin to dismantle the Washington consensus. 

But early moves, like pressuring Israel towards a Gaza ceasefire, complicate the picture. Will Trump push Ukraine into a rushed deal that favours Moscow, scale back Europe's defence or take an entirely different approach?

For NATO allies, what does "America First" mean now, as Trump's far-right fanbase grows across Europe? 

Produced by François Picard, Théophile Vareille, Guillaume Gougeon and Ilayda Habip.