" told the Reichstag that the age of “Cabinet” wars, that is wars determined by rulers for limited ends, was over: “All we have now is people’s war, and any prudent government will hesitate to bring about a war of this nature, with all its incalculable consequences.” The great powers, he went on, will find it difficult to bring such wars to an end or admit defeat: “Gentlemen, it may be a war of seven years’ or of thirty years’ duration—and woe to him who sets Europe alight, who puts the first fuse to the powder keg!”89 "

― Margaret MacMillan , The War That Ended Peace: The Road to 1914