How Raymond Davis gummed up the works

The New York Times is serialising chunks of Mark Mazetti's new book, The Way of the Knife: the CIA, a Secret Army and a War at the Ends of the Earth (please excuse the gratuitous caps), about CIA operations in Pakistan. The latest installment, on the Raymond Davis case, makes excellent reading and purports to explain the major fall-out between the US and Pakistan following the arrest of the CIA contractor on a double murder charge in Lahore in January 2011.