at least from the american perspective dunkirk is a little under reported. >> but with most of the americans tell me it is absolutely wonderful although i expect that americans have heard a lot about dunkirk did know about it but why? one very basic reason my wife begged me not to write another biography. because that took four years so asked if i would do a shorter book says she said write a book about dunkirk. so i thought about it and that was not a bad idea. i would be more interested that surely no one has dealt with a step-by-step the way in which we went to war in that chronological order so it is still the great untold story. so it is taken out of context but not the entire story. >> so there were so clear the those people who went to dunkirk. >> after may 10, 1940 what happened to neville chamberlain?. >> he vacate in search of the war effort but he and churchill buried the animosity and came to trust each other. churchill insisted that chamberlain remain the head of the conservative party and churchill was quite touched with his loyalty. so chamberlain once the war had begun became