The State Department issues a terror alert, warning “that al-Qaeda continues to prepare to strike US interests abroad” and such attacks “could possibly involve non-conventional weapons such as chemical or biological agents as well as conventional weapons of terror.” More specific information is not provided. [Command Post, 3/21/2004] The same day, former counterterrorism “tsar” Richard Clarke gives an interview that is harshly critical of the Bush administration’s counterterrorism efforts (see March 24, 2004). [CBS News, 3/21/2004]