On Feb. 12, 2008, Imad Mughniyah, Hezbollah’s international operations chief, walked on a quiet nighttime street in Damascus after dinner at a nearby restaurant. Not far away, a team of CIA spotters in the Syrian capital was tracking his movements. As Mughniyah approached a parked SUV, a bomb planted in a spare tire on the back of the vehicle exploded, sending a burst of shrapnel across a tight radius. He was killed instantly.