The unanimity of European non-endorsement is without recent precedent for a major US military operation. In 2003, the UK, Spain, Italy, Poland, and several other European states supported the Iraq invasion. In 2011, France and the UK led the Libya intervention with US support. In both cases, a coalition of European states was available to provide political cover internationally.
In February 2026, that coalition does not exist. The EU's collective 'greatly concerning' language is diplomatically restrained — stopping short of outright condemnation — but the substance is the same: no European state is prepared to associate itself with the strikes politically, legally, or militarily.
The practical consequences are immediate. US requests for overflight clearance through European airspace for follow-on strikes face political resistance. European intelligence-sharing arrangements may be restricted for strike-related operations. Any post-strike reconstruction or stabilisation role the US might seek European participation in will require substantial negotiation.
The rupture also creates a problem for NATO coherence. A major US military operation that every European ally declines to endorse strains the principle of allied solidarity that underpins NATO's deterrent credibility against Russia. Eastern European members — already reassessing the reliability of US extended deterrence given Washington's Middle Eastern focus — will accelerate domestic defence spending and reduce dependence on US security guarantees.
