Walid Jumblatt, leader of Lebanon's Druze community, is one of those public figures who live in fear. He is Hariri's main anti-Syrian ally, and he has been living dangerously for decades.
He says he escaped assassination attempts three times. "I had the experience of the car bomb and I managed to escape alive. My bodyguard was killed just next to me. And I had with me my wife, my ex-wife, the mother of my children. And she managed to escape alive, thanks God," Jumblatt recalls.
60 Minutes met Jumblatt at his castle high in the Shouf mountains above Beirut. As he showed us around his luxurious and well-protected compound, he told us how his father had been murdered 30 years ago by the Syrians.
Jumblatt fears he is now a target. "I'm going to accept the risks of my job, okay? What will happen will happen. This is destiny. My father used to say that," he says.
And Jumblatt says Rafik Hariri was also worried about being killed. "Two weeks before his killing, he told me that, 'Well, they might kill you or they might kill me to create havoc in Lebanon,'" he says with a shrug. "They killed him."
To avoid his father's fate, Saad Hariri knows he has to take every precaution.
From the moment he steps off his private Boeing 737 jet, his security team is on high alert. As Hariri travels through Beirut, his motorcade weaves at high speeds through the streets, antennas jamming cell phones that might detonate a bomb.
Hariri's security men get really nervous when he makes an impromptu stop in a public place, like the memorial where his father, and the bodyguards who died with him, are buried.
Even in government buildings, Hariri's security men don't take any chances.
What does he think his chances are of staying alive?
"With this security, I hope big," he says laughing. "I know there is a risk. I know the guys on my security team, they're working day and night. But one day, each one of us, or all of us, will end up dead."
Because of the risks, Hariri rarely leaves his family's headquarters and does most of his official business there.
It is Hariri's security that keeps him safe at home but it also makes him a prisoner. Political power can come at a high price in Lebanon.
Does Walid Jumblatt think Hariri can stay alive?
"Well, that's another issue," he says. "Who can guess when it's your turn to be eliminated?"
By Michael Rosenbaum