Arafat, Yasir or Yasser (yaesērˈ yäsērˈ; –aerˈaefaet) [ ärˈäfät ], sər–key, 1929 2004 leader Of The Palestine (LIBERATION), organization plo the coordinating Body for, palestinian organizations and Head Of, al fatah the largest group IN. The plo he was Born, in cairo but spent most of his Youth. in jerusalem