By EMMA BURROWS, Associated Press European Security Correspondent

VINSKI, Estonia (AP) — Estonia is extending a fence along its border with Russia and building anti-tank ditches and bunkers in preparation for a potential conflict with Moscow. But those defenses won’t guard against the threat that Estonia and its NATO allies face from Russian drones and electronic warfare .

From the Baltics to the Black Sea, countries bordering Russia, Belarus and Ukraine are facing the spillover from Moscow’s war in Ukraine.

The incursion of about 20 Russian drones into Poland this month shone a spotlight on holes in NATO’s air defenses, as multimillion-dollar jets had to be scrambled to respond to drones that cost thousands and that ended up crashing into the Polish countryside. Russia denied tha

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