Trump's tantrums over Nato are prompting European leaders to think the unthinkable
Europeans must urgently seek to close their security gaps in case Russia attacks – and the US refuses to defend its allies

TL;DR
- European nations are developing a "plan B" for security due to Donald Trump's criticism of NATO and potential US withdrawal of military support.
- Europe has taken over financial and political responsibility for supporting Ukraine, with many seeing Ukraine as a defense asset.
- Trump's rhetoric, calling NATO a "paper tiger" and allies "cowards," has undermined the alliance's credibility.
- Germany is aiming to become Europe's strongest conventional army by 2039, and France is discussing extending its nuclear deterrent to partners.
- European countries cannot short-term replicate key US capabilities like satellite intelligence, air and missile defense, and logistics.
- The EU conducted its first tabletop exercise to test its mutual assistance pact (Article 42.7), though it has historically not led to military action.
- The Iran war is depleting US arsenals, potentially delaying European orders for vital weapons and creating a "lengthening window of vulnerability."
- A European defense union led by France, Germany, and the UK, backed by NATO and EU resources, is suggested as the strongest option if the US withdraws.