Stuart Reid is the executive editor of Foreign Affairs and author of the new book "The Lumumba Plot: The Secret History of the CIA and a Cold War Assassination." The book tells the story of Congo's liberation from Belgium in the 1950s and 60s and the rise to prominence of Patrice Lumumba, Congo's charismatic independence leader. Believing Lumumba to be under the sway of the Soviet Union, the CIA hatched a plot to assassinate him at a time when Congo was falling into a chaotic civil war. Into this civil war, UN Secretary-General Dag Hammarskjöld dispatched a unique peacekeeping mission to restore order and died in a plane crash under mysterious circumstances.  Stuart Reid weaves each of these stories into a single compelling narrative that reads at times like a spy thriller.