What are PDBs?
Presidential Daily Briefings
President’s Daily Brief - They used to be prepared by the CIA Operations Center and briefed by the Senior CIA Liaison to the White House, but I’ve been told that Obama changed that. They used to be marked “Eyes Only” (for viewing by the president and others designated by the president), but I understand Obama changed that as well. The PDB generally contains new information and updates on high-priority items of interest as identified by the president, the national security advisor, the director of national intelligence and others as designated by the president. As I’m sure you can imagine, they are very classified.