A Delicate Truth by John le Carre
A counter-terror operation,codenamed Wildlife, is being mounted in Britain's most precious colony, Gibraltar. Its purpose: to capture a high-value jihadist arms-buyer.
Its authors: an ambitious Foreign Office Minister, and a private defence contractor who is also his close friend. So delicate is the operation that even the Minister's Private Secretary, Toby Bell, is not cleared for it. Three years later, when the horrifying truth behind Operation Wildlife is uncovered, Toby will be forced to choose between his conscience and his duty to the Service.
If the only thing necessary for the triumph of evil is that good men do nothing, how can he keep silent?