Iraq had no stockpiles of biological and chemical weapons before last year’s U.S.-led invasion and its nuclear program had decayed, the chief U.S. weapons inspector said on Wednesday, contrary to prewar assertions of the Bush administration.President Bush cited a growing threat from Iraq’s weapons of mass destruction as one of the main reasons for overthrowing President Saddam Hussein. “I still do not expect that militarily significant WMD stocks are cached in Iraq,” Charles Duelfer, the CIA special adviser who led the hunt for such weapons said in testimony to the U.S. Senate Armed Services Committee.Full Story