President George W. Bush telephoned his condolences Wednesday to Lebanon's prime minister, Fuad Saniora, and former President Amin Gemayel for the assassination of Gemayel's son, Pierre Gemayel. Gunmen killed the younger Gemayel, minister of industry in Saniora's Cabinet, after trapping his car between two cars on a street in Beirut's suburbs. "President Bush reiterated to Prime Minister Saniora the unwavering commitment of the United States to help build Lebanese democracy and to support Lebanese independence from the encroachments of Iran and Syria," said Gordon Johndroe, spokesman for the National Security Council. Amin Gemayel was elected in 1982 and served six years as Lebanon's president. He replaced his brother Bashir Gemayel, who was elected president but died from an assassin's bomb before he could take office. "He pointed out that violence and unrest in Lebanon will not stop the international community from establishing the special tribunal for Lebanon."