When Russian security police summoned me to an interrogation at Moscow’s Lefortovo Prison in 1993, they allowed me to bring my own interpreter. And I knew exactly whom to ask. Andrei Mironov was a former Soviet dissident, former gulag prisoner and perennial advocate for truth. Fearless and crafty, he was uncowed by authority of any stripe and devoted to logic and rationality — exasperatingly so, in a country as illogical as Russia.