In March 1994 Cameron Spence flew out of the UK as second in command of a unit tasked with the SAS's most demanding operation. All Necessary Measures charts the minute-by-minute progress of an impossible mission. In a place where medieval savagery formed part of everyday life, and where allies became enemies with fearsome speed, Spence's troops worked undercover, their presence classified and deniable. A rollercoaster of events followed their arrival in the theatre. And as the situation on the ground spiralled out of control, part of the unit became trapped in a besieged city, their only chance of survival a daring breakout through the advancing lines of their attackers. This is a no-holds-barred, real-life adventure, the tense and adrenalin-charged true story of two months in the world's most volatile combat zone.