Saudis emerge as key US ally against terrorists

US: A decade after hijackers mostly from Saudi Arabia attacked the United States with passenger jets, the Saudis have emerged as the principal ally of the U.S. against al-Qaida's spinoff group in Yemen and at least twice have disrupted plots to explode sophisticated bombs aboard airlines.

Details emerging about the latest unraveled plot revealed that a Saudi double agent fooled the terror group, known as al-Qaida in the Arabian Peninsula, passing himself off as an eager would-be suicide bomber. Instead, he secretly turned over the group's most up-to-date underwear bomb to Saudi Arabia, which gave it to the CIA. Before he was whisked to safety, the spy provided intelligence that helped the CIA kill al-Qaida's senior operations leader, Fahd al-Quso, who died in a drone strike last weekend.

The role of Saudi Arabia disrupting the plot follows warnings in 2010 from the oil-rich kingdom about a plot to blow up cargo planes inside the U.S., either on runways or over American cities. That plot involved a frantic chase across five countries of two packages containing bombs powerful enough to down an airplane. Twice, a bomb was aboard a passenger plane. Once, authorities were just minutes too late to stop a cargo jet with a bomb from departing for its next destination. AP