Econintersect: This BBC documentary details U.S. foreknowledge of Japan’s attack on Pearl Harbor. Much more evidence has come to light since the 1989 – when this film was put together. There is a lengthy review of what has been published about Pearl Harbor at Wikipedia: Pearl Harbor advance-knowledge conspiracy theory.
This documentary covers information about what the British knew about Japanese war plans 1-2 years before the attack on Pearl Harbor. The inference here is that Churchill knew of the Pearl Harbor attack plans in advance, The question that presents itself: Did Churchill know and hide the information from FDR (Franklin Delano Roosevelt)? Or did he share with Roosevelt and FDR failed to act?