NEW : Netanyahu describes Barak comments as 'irresponsible ' the Shin Bet is the former head of Ehud Barak , the country 's internal security service . He accuses Netanyahu and Barak of mischaracterizing the possible effectiveness of attacking Iran . But , he said , `` They have n't rolled back the Iranian program -- or even stopped it -- by one iota . '' Netanyahu says sanctions are not having a meaningful effect on Iran 's nuclear program .
NEW : Netanyahu describes Barak comments as 'irresponsible ' the Shin Bet is the former head of Ehud Barak , the country 's internal security service . He accuses Netanyahu and Barak of mischaracterizing the possible effectiveness of attacking Iran . Netanyahu says sanctions are not having a meaningful effect on Iran 's nuclear program .