Debate: Why should France blame Germany? WWI?

First: You have to stand by your friends, because otherwise you are going to loose them and in a dangerous world this would mean destruction. So if Russia thinks she has to protect Serbia, then France must help Russia. Second: You could argue that Germany was a constant threat to others. Example: The two crises about Morocco. In the second crisis Germany succeded in blackmailing France to enlarge Cameroon. Another example: In July 1914 Germany protects Austria-Hungary to enable her to humiliate Serbia. (These are not my opinions. I just try to see the French point of view. At the beginning of the crisis of July 14 the French government debated about how they could find a means to make war inevitable.)