Clarke is the former national coordinator for security, infrastructure protection and counterterrorism. He held the position in President Clinton's administration and continued for President Bush. He resigned in March 2003. His new book is Against All Enemies: Inside Americaâs War on Terror. In the book he criticizes the Bush administration for failing to heed warnings about al Qaeda before Sept. 11, and for invading Iraq without evidence of a connection to al Qaeda. Clarke also worked for the Reagan Administration and the first Bush administration.