The EU has its Trojan horses and Nato’s cornerstone has crumbled. But European allies, including the UK, are bound by an urgent shared purpose

Moscow’s immense military mobilisation is clearly not aimed just at Ukraine. Unless Vladimir Putin accepts a ceasefire with meaningful security guarantees there will be no end in sight to the war. If anything, we could see the extension of Russia’s aggression beyond Ukraine. The bleak reality is that Europe still faces an unprecedented threat and notwithstanding signs of progress for Ukraine at talks in Jeddah, we face it alone.

Worse, we now have to confront it with the US working against us. Vladimir Putin and Donald Trump appear to share a plan: a Vichy-like regime in Ukraine and a European continent split into spheres of influence, which Russia, the US (and perhaps China) can colonise and prey upon. Most European publics sense this. A critical mass of European leaders gets it too. They are beginning to act.

Nathalie Tocci is a Guardian Europe columnist