The Russia House (John Le Carre)

The Russia House John Le Carre PENGUIN CLASSIC SERIES
Barley Blair is not a Service man: he is a small-time Publisher, a self-destructive soul whose only loves are whisky and jazz. But, one drunken night a a dacha dring the Moskow Book Fair, Barley made a promise to a high-ranking Soviet scientist who colud be the greatest asset to the West since perestroika began.