Israeli ex-finance minister Benjamin Netanyahu speaks during a news conference in Tel Aviv, August 30, 2005. Netanyahu, Israeli Prime Minister Ariel Sharon's bitter rival, launched a bid on Tuesday to topple him as Likud party leader in a power struggle sparked by the evacuation of Gaza settlers. Likud polls show ex-finance minister Netanyahu would rout Sharon in a primary if it were held soon, stirring speculation Sharon may break away from rightists and forge a new centrist party to run in an election due before November 2006. REUTERS/Dan Balilty DB/OP/VP