Saudi Arabia has shrugged off newly leaked U.S. diplomatic memos that say King Abdullah urged a U.S. attack against Iran. Saudi Foreign Ministry spokesman says the memos 'do not concern us.' The spokesman, Osama al-Naqli, says the kingdom has no insight into the authenticity of the documents and 'we cannot comment on them.' His statement was carried by Saudi media on Tuesday. A leaked document described a Saudi official reminding U.S. diplomats of advice given by Abdullah that the Americans attack Iran to 'cut off the head of the snake' and cripple its nuclear program. Although the Sunni kingdom is weary of Shiite Iran's growing influence and nuclear potential, Saudi officials rarely speak publicly about such concerns. 