# The Estonian Watchmen: Arnold Sinisalu

An episode of [NatSec Matters](https://invisiblenetwork.ai/podcast/1711240452), 12 Mar 2025, 46 min.

Audio: https://traffic.libsyn.com/secure/6ef5eecd-b84d-413c-9ce6-9db304c42390/Episode_73_-_Arnold_Sinisalu-edited.mp3?dest-id=4161986

Michael Allen speaks with Arnold Sinisalu, former chief of Estonia's Internal Security Service, about Estonia's frontline role in countering Russian espionage and subversion. Arnold describes how Estonia tracks and disrupts Russian intelligence operations, from spy arrests to cyber defense. He also discusses Russia's evolving sabotage tactics across Europe and the ongoing battle against disinformation.

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