Most heard the truck before they saw it. The convulsive roar of its diesel engine was a violent intrusion on the otherwise still morning. It was impossible to ignore. The Italian security men paused in mid-conversation and looked up, as did the group of fourteen strangers gathered outside the entrance of the embassy. The tubby Jesuit, who was waiting for a bus at the opposite end of the street, lifted his round head from his copy of L’Osservatore Romano and searched for the source of the commotion.

The gentle slope of the street helped the truck gather speed at an astonishing rate. As it rounded the bend, the massive load in its cargo container pushed the truck heavily onto two wheels. For an instant it seemed it might topple. Then somehow it righted itself and began the final straight-line plunge toward the compound.

The driver was briefly visible through the windshield. He was young and clean-shaven. His eyes were wide, his mouth agape. He seemed to be standing atop the gas pedal, and he seemed to be shouting at himself. For some reason the wipers were on.

The Italian security forces reacted immediately. Several took cover behind the reinforced concrete barriers. Others dived for the protection of the steel-and-glass guard posts. Two officers could be seen pouring automatic fire toward the marauding truck. Sparks exploded on the grille, and the windshield shattered, but the truck continued unhindered, gathering speed until the point of impact. Afterward, the government of Israel would commend the heroism shown by the Italian security services that morning. It would be noted that none fled their positions, though if they had, their fate would have been precisely the same.