“Not a Game”: What NATO Said and Why It MattersIn Brussels, diplomats issued a firm warning: such incursions were dangerous, provocative and had to stop. “The alliance will use every lawful tool — military and non-military — to defend its members.”The language was carefully measured yet unmistakably stern. NATO’s collective defence remains the bedrock of European security; Article 4 consultations are a way to put a spotlight on threats short of invoking the mutual-defence Article 5. “This is hybrid pressure applied across multiple domains — air, cyber, infrastructure,” said Dr. Ana Petrovic, a security scholar at a European university. How the alliance answers these incidents in the coming weeks will say a great deal about the shape of European security for years to come.