Protests erupt across country in temperatures of minus-50 Celsius, after arrest of Kremlin critic; demonstrators rally outside Russian embassy in Tel Aviv

Opposition figure's wife among those detained; thousands of demonstrators demand release, hold signs that read 'Russia will be free,' chant 'Putin is a thief'

Putin’s most prominent foe spent 5 months in Germany recovering from a nerve agent attack he blames on the Kremlin

Man in recording indicates he was involved in cleaning up Alexei Navalny's clothes 'so that there wouldn't be any traces' after Putin critic fell into coma mid-flight over Siberia

Russian president says US intelligence pushing allegations that Kremlin exposed opposition chief Alexei Navalny to Novichok nerve agent, claims activist just seeking publicity

Moscow urged by Western nations to 'transparently' reveal circumstances of opposition figure poisoning; Damascus faces calls for investigation over chemical weapon attacks

OPCW's conclusions match findings by labs in Germany, Sweden and France; Moscow has expressed doubts on the matter

Irina Slavina, editor-in-chief of independent investigative news site, says to blame her death on Russian Federation

Kremlin denies any part in incident, which German Chancellor Merkel called attempted murder

'My job now is to remain the guy who isn't scared,' says opposition leader, who is recovering in Berlin from nerve agent attack