Soldier of Fortune

The story involves the theft of nuclear weapons, and the main enemy turns out to be an Afrikaner neo-fascist group based in Germany, led by South African exile Sergei Dekker. John Mullins, working for a U.S.-based mercenary ("soldier of fortune") organization known only as "The Shop", and his partner, Aaron "Hawk" Parsons, are assigned to prevent the nukes from falling into the wrong hands, and stop the terrorists in their plans. (wiki)