For the first time in its history the SAS is assigned a task in Russia The aim of Operation Nimrod is to train leaders and instructors of Tiger One, a new Spetnaz unit created to combat the ever-increasing threat of criminal gangs know collectively as the Mafiya Then, during final briefing in Hereford, Sharp finds that his orders contain a sinister hidden agenda a scheme so outrageous that his conscience will barely allow him to carry it out