Alexander Litvinenko

Russian President insists Salisbury poisoning suspects are just civilians and not criminals

Kremlin critic’s death had been faked in an attempt to flush out people who were trying to kill him

Sergei Skripal’s apparent poisoning has drawn comparisons with 2006 poisoning of other exiled former Russian spy

Outspoken critic of Vladimir Putin has been charged with murder in absentia

Public inquiry begins into poisoning of Alexander Litvinenko after eight years of speculation

Until now, government didn't want to risk Russian relations: after MH17, we're happy to upset Putin

A poison that does its work and leaves no trace in the body is not as far-fetched as you might think