Russian opposition politician Alexei Navalny was poisoned with a Novichok nerve agent, Germany's government says.
Tens of thousands have again taken to the streets in Belarus, facing off against riot police to protest against President Alexander Lukashenko.
Police in Berlin have arrested 300 demonstrators during protests against Germany's coronavirus restrictions.
Belarusian President Alexander Lukashenko has been heckled by workers on a visit to a factory as anger mounts over his disputed re-election.
Opponents of Belarusian President Alexander Lukashenko are gathering for another day of protest in Minsk over disputed elections last weekend.
Russia's unmanned Luna-25 spacecraft has crashed into the Moon after spinning out of control, officials say.
Donald Trump has confirmed that he will not take part in Republican presidential debates with his rivals in the race for the White House.