Whirlwind: The Sixth Novel of the Asian Saga, James Clavell

Whirlwind is the story of three weeks in Tehran in February 1979: three weeks of fanaticism, passion, self-sacrifice and heartbreak. Caught between the revolutionaries and the forces of international intrigue is a team of professional pilots. They are ordered to flee to safety with their helicopters. Two of them, both Europeans, have Iranian wives whom they love beyond safety and politics.