Answer: A book is likely to be more accurate with the information presented.
Explanation: The book written years later can be more complete and detailed because time benefits to the investigation of the subject and to collect information and declarations from people who survived or fighted during war. On the other hand, a live television report may be show only a part of reality, and it also may show only the scene that parties may want people see and believe. For example: In Argentina, during the Falklands's War, the government showed, by tv, that Argentina was clearily winning the war, but it was not so.