There is nothing "surgical" about the operation, nothing "surgical" about chaos, destruction, and death. In medical terms, if the patient doesn't survive the surgery, it was not quite surgical enough.
Peter had known this Sergey for many years. They met first in Berlin, became reacquainted in Managua, ran into each other in Zurich and then under orders from Putin, Sergey had him escorted from his apartment under guard to the Moscow airport.
