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Alexei Navalny detained at airport on return to Russia
By Andrew Roth & Luke Harding
Can EU keep Navalny safe as he 'defies' Putin?
By andrew rettman
Russian opposition leader Navalny arrested upon arrival in Moscow
By Eva Hartog
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Biden national security advisor calls for Russia to immediately release detained Putin critic
By Amanda Macias
Kremlin critic Navalny detained after landing in Moscow
By Jim Heintz & Mstyslav Chernov
Alexei Navalny detained in Moscow
By Isabelle Khurshudyan & Loveday Morris