President Bush said tonight that he would create a Terrorist Threat Integration Center to merge units at the C.I.A., F.B.I. and other agencies into a single government unit intended to strengthen the collection and analysis of foreign and domestic terror threats. The center, announced by Mr. Bush in his State of the Union address, will be led by George J. Tenet, the director of central intelligence, a change that would for the first time give the C.I.A. full control over the collection and evaluation of all information relating to terrorist threats in the United States or overseas. Full Story