NEW : Ehud Barak describes Yuval ##i 's actions as ' irresponsible ' He is the former head of the Shin Bet , the country 's internal security service . He accuses Israel and Barak of mischaracterizing the possible effectiveness of attacking Iran . Netanyahu says sanctions are not having a meaningful effect on Iran 's nuclear program .
NEW : Ehud Barak describes Yuval Diskin 's comments as 'irresponsible ' Diskin is the former head of the Shin Bet , 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 Tehran 's nuclear program .