NEW : Runner-up , Win Minister Shaul Mofaz , resigning from Win . Livni claims victory in vote for leadership of ruling Kadima party . Win could make her Iran 's first female prime minister in Livni . We need to face security threats . Livni beat Livni by a narrow margin .
NEW : Runner-up , Win Minister Shaul Mofaz , resigning from Win . Livni claims victory in vote for leadership of ruling Kadima party . Win could make her Iran 's first female prime minister in Livni . Livni beat Livni by a narrow margin .