KUALA LUMPUR -- Three times Tony Fernandes has tried to take AirAsia Group into Vietnam, one of Southeast Asia's fastest growing aviation markets. Three times he has failed. Now, the unstoppable head of the region's first and largest low-cost carrier is going for a fourth attempt.

Company in focus
AirAsia set to meet its match in Vietnam's Vietjet
Low cost-carrier drives growth by copying from Southeast Asia's budget pioneer