On April 19, 2001, the interagency Counterterrorism Security Group (CSG) chaired by counterterrorism “tsar” Richard Clarke discusses recent reports that al-Qaeda leader Abu Zubaida is planning an attack. The next day, a Senior Executive Intelligence Brief (SEIB) with the title “Bin Laden Planning Multiple Operations” is sent to top White House officials. The New York Times will later report that President Bush and Vice President Cheney were among those who received this warning. Since SEIBs are usually based on previous days’ President Daily Briefings, President Bush probably learned about this report on April 19 (see January 20-September 10, 2001). [New York Times, 4/18/2004; 9/11 Commission, 7/24/2004, pp. 255; US District Court of Eastern Virginia, 5/4/2006, pp. 2 ]