President Bush approved dozens of changes at U.S. spy agencies on Wednesday to better combat weapons of mass destruction, including creating a new center and moving FBI counterterrorism and intelligence operations into a new unit. Acting in the face of sharp criticism since the Sept. 11, 2001, attacks, Bush signed off on 70 of 74 recommendations from a special presidential commission and gave U.S. authorities new powers to freeze assets of companies believed to be helping North Korea, Iran and Syria pursue nuclear, biological and chemical arms. An executive order issued on Wednesday did not mention specific countries, but said...