Leba**n's two main Christian politicians held their first meeting in years on Tuesday, an effort to find common ground among civil wartime enemies whose rivalry has helped obstruct the election of a new president. Michel Aoun and Samir Geagea, who fought each other in the dying years of the 1975-90 civil war, are both candidates for the Lebanese presidency that has been vacant since Michel Suleiman's term expired a year ago. The post is reserved for a Maronite Christian according to the country's sectarian power-sharing system.