K&R is short for Kidnap and Ransom.
Red Notice is a tool used by the International Criminal Police, or Interpol, to notify all law enforcement agencies outside the purview of the sending agency jurisdiction, that a warrant for arrest has been issued for the person mentioned in the notice.
T.E. Lawrence, Lawrence of Arabia, was a British officer who led the Arab armies against the Turks in the Middle East during World War I from 1915 to 1918.
The photo which is shown as Harold Harper enters the mansion of his mentor, Morgan Bote, has Soviet Premier Mikhail Gorbachev and President Ronald Reagan in the foreground, with Morgan adjacent to both. The implication being, he is a very important man, who has some influence in the world. The photo on the right is one of Ronald Reagan's predecessor, President Richard Nixon
During the scene in the restaurant, Keith Jarrett's "The Köln Concert" can be heard. This is very unusual for such a scene.