Nov 2000: PM Ehud Barak approves plan for barrier in part of north and central West Bank.
Jun 2001: Committee set up by PM Ariel Sharon recommends a version of Mr Barak's plan.
April 2002: After a wave of suicide bombings Israeli cabinet decides to build barrier. Israeli forces begin requisitioning land.
Oct 2003: Full planned route published.
June 2004: Israeli High Court orders route change around Jerusalem on humanitarian grounds.
July 2004: International Court of Justice declares barrier illegal in an advisory ruling.
Feb 2005: Israeli government publishes revised barrier route.
Aug 2005: Cabinet approves final route around Jerusalem.
Sep 2005: Supreme Court orders government to reconsider route near Qalqilya.
Mar 2006: Ehud Olmert wins election with plan to set Israel's borders unilaterally along barrier route, if talks fail.