Israel's Prime Minister Ehud Olmert (R) and Foreign Minister Tzipi Livni attend a special parliamentary debate on Israel's Lebanon war inquiry, in Jerusalem May 3, 2007. Olmert faced on Thursday a major challenge to his pledge to stay in power, a protest rally that organisers hope will draw at least 100,000 people demanding he resign over the Lebanon war. REUTERS/Oleg Popov (JERUSALEM)