The big problem we are all suffering is the revisionism and modern histriography about the war, it's causes, etc etc. Shakey Paul quotes Liddell Hart, which is "old" history with his twist, while you might find yourself reading wholly newer works or watching stuff on TV. At the end of the war, winning the history was as important to the victorius protagonists as much as it was about real politik (which hadn't been invented in 1945).
I think it is good to follow Paul's example and read the old books which offer an evaluation prior to much of the documentation being released (especially in the UK) and then the modern stuff, revisionism and all.
I think Chamberlain was a weak politician. But his motive for Appeasement was to save his country and europe from another war. It has merit, but not if you are Czech or a Pole. We have been lead down the path that he was some kind of wimp idiot, suckered by the knave Adolf and that he bears a direct responsibility for the war. This ignores the rampant political chaos in France - the superpower - where as it tried to rearm, the unions were sabotaging factories to halt tank production - amongst other things.
Chamberlain was a pragmatist, he knew the west was not ready for a war. But of course he would have been seduced by the propaganda of burgeoning German militarism creating a huge unbeatable army for all time.
Chamberlain and co had seen what the Fascists had done in Spain with modern weapons. They had every reason to be poo scared. Britain, of course, hid behind - or counted on - depending on your viewpoint - the Royal Navy which was twice the size of both nearest rivals. But the writing was on the wall for powerful fleets devoid of air power.
Tha Japanese, too, were pragmatists and intensely dangerous as their culture and system went into meltdown. They could see that a still weak Britain could not hope to fight a war on two fronts and an alliance with Germany would help their ambitions. I would imagine they still thought their primary enemy would be the United States, and so it proved.
MB