Estonian defense officials have issued a stark warning that Russia is planning a significant military buildup along NATO's eastern border, potentially shifting the balance of power in Europe. The alert comes as Western intelligence agencies report increased Russian military activity.

The Baltic state, which shares a border with Russia, has been one of the most vocal advocates for NATO deterrence measures since Russia's invasion of Ukraine. Estonian leaders say the planned buildup represents a direct threat to regional stability.

Estonia has called for increased NATO troop deployments and more robust defense commitments from alliance members. The tiny country of 1.3 million people views Russia's military posture as an existential threat.

NATO officials have expressed concern about the reported buildup but emphasized the alliance's commitment to collective defense. The warnings have renewed debates about European defense spending.

For Gen Z Estonians who grew up in a free country, the Russian threat represents a terrifying echo of their grandparents' experiences.