For the first time since Russia’s full-scale invasion of Ukraine, a NATO member has formally invoked Article 4 of the alliance’s founding treaty after a major airspace breach. Estonian Foreign Minister Margus Tsahkna tells Talk to Al Jazeera why repeated Russian provocations are more than isolated incidents – they’re a test of NATO’s credibility. As United States President Donald Trump questions the value of collective defence, Tsahkna warns that Europe’s security consensus is fraying and hesitation could invite danger.
Published On 26 Oct 2025
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