Cause of WWI a can of worms too big for even the letters page 

Michel Weldon gets off to a poor start by saying that World War One was “fought to stop the imperialistic Germans”. Nonsense, and it goes right downhill from there. For example, he informs us that from the 1919 Treaty of Versailles, to Hitler invading Poland at the beginning of 1939 was “a repeat of the destruction and killing 30 years later”. The last time I looked, 1939 minus 1919 will always leave 20. That unfortunately sets the accuracy level of his entire submission.
I agree that many historians are still bickering over the causes, and they remain a vibrant area of research that cannot be completed by scholars of one academic discipline alone. It certainly cannot be all laid at the door of Germany alone – as Weldon erroneously  pontificates – despite the Germans’ obvious imperialistic designs. The Austro-Hungarian Empire is seen as the main culprit by many, and then again lots of people might blame a declining Muslim Ottoman Empire (I can think of some who write here, for example).
Were I and, doubtless, many others to go into this in some depth, the entire thing would easily exceed the parameters of any newspaper’s Letters page for an entire year, and then some.
Dr Frank