Nato chief has glibly dismissed prospect of coping without US support, but in the age of Trump the case for autonomy is growing

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he Nato secretary general, Mark Rutte, was typically blunt when he met members of the European parliament this week. From the dais of the blond-wood committee room in Brussels, he was clear: “If anyone thinks that the European Union, or Europe as a whole, can defend itself without the US, keep on dreaming. You can’t. We can’t.”

And if Europe wanted to supplant the US nuclear deterrent, existing spending commitments would have to double, he added – “so hey, good luck!”

His comments left some MEPs fuming. The former Dutch prime minister – who provoked mockery when he called Donald Trump “Daddy” – had already irritated some deputies with his robust defence of the US president’s interest in the Arctic.