Agents of doubt: How a powerful Russian propaganda machine chips away at Western notions of truth

SALISBURY, England - The initial plan was a Cold War classic - brutal yet simple. Two Russian agents would slip onto the property of a turncoat spy in Britain and daub his front door with a rare military-grade poison designed to produce an agonizing and untraceable death.

But when the attempted assassination of Sergei Skripal was botched, the mission…