A Time to Die by Wilbur A. Smith

Sean Courtney, professional hunter and veteran guerrilla fighter, is swept up in the savage tides of a new war. Caught between two rival armies, between his love for the beautiful woman at his side and his instincts as a trained fighter, Courtney finds himself the captive of a brutal enemy from his past. For Sean, it is a time to fight and a time to find a deep and passionate love. For the beautiful Claudia Monterro it is a time to face the ultimate test in a world where American values count for nothing. And for Riccardo, her father, a rich and ruthless business tycoon, it is a time to confront a dangerous obsession.