Iranian President Mahmoud Ahmadinejad flashes the V-sign for victory before a welcoming his Djiboutian counterpart Ismail Umar Guelleh in Tehran 03 September 2006. Ahmadinejad responded 06 September 2006 to a harsh verbal attack from US President George W. Bush by saying he was "nothing" compared to God's will. "All the world is threatening you.. this massive stream is moving and you are nothing in comparison to God's will," the Iranian president said at a conference, held ahead of the birthday of the "hidden" twelth Imam of Shiite Islam, Mahdi, later this week. Bush branded yesterday Iran's leaders "tyrants" as dangerous as Al-Qaeda, saying said they must not be allowed to get nuclear weapons -- "the tools of mass murder."