Israel's outgoing spy chief Meir Dagan today said, Iran will not have a nuclear weapon before 2015 as the country's nuclear programme has been delayed. Dagan, who demits office after eight years, has said that the Iranian nuclear weapons programme had been disrupted and credited what he called unspecified measures employed against it.The Mossad chief told the influential Israeli paper 'Yedioth Ahronoth' that the completion date might be further delayed by a year or two, even ifWestern powers attempt to thwart the program prove futile.He said the economic sanctions and political isolation of the Tehran regime had prevented the country from obtaining key equipment for the development of nuclear weapons including high-tech computers and rare matters.Israeli officials had earlier set a shorter deadline for Iran to acquire a nuclear bomb.