- Kremlin critic Alexei Navalny, comatose in a Berlin with suspected poisoning, was under covert surveillance, Russian media reportsThe Washington Post
- Putin critic Alexei Navalny moved to German hospital after suspected poisoning – BBC NewsBBC News
- Kremlin critic Navalny was under police surveillance before falling ill: paperReuters
- Who is poisoning Russian dissidents and why?Al Jazeera English
- Another Putin Critic Apparently PoisonedThe New York Times
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