The three strong and eloquent notes of President Wilson in regard to the Lusitania are too well known to be quoted here. The practical answer from Potsdam (passing over the usual subterfuges and falsehoods) was the sinking of the Arabic August 19 and the murder of three more Americans. Then the correspondence languished until the torpedoing (March 24, 1916) of the Sussex, a Channel ferry-boat, crowded with passengers, among whom were many Americans. Then the President sent a flat message calling down the Potsdam pirates and declaring that unless they abandoned their nefarious practices "the United States had no choice but to sever diplomatic relations with the German Empire altogether" (April 18, 1916).
This brought a grudging promise from Germany that she would henceforth refrain from sinking merchant-vessels "without warning and without saving human lives, unless the ship attempted to escape or offer resistance." How this promise was kept may be judged from the sinking of the Marina (October 28), with the loss of eight American lives, and of the Russian (December 14), with the loss of seventeen American lives, and other similar sinkings.
During all this time Germany had been building new and larger submarines with wonderful industry. She had filled up her pack of sea-wolves. On January 31, 1917, she revoked her flimsy pledge, let loose her wolf-pack, and sent word to all the neutral nations that she would sink at sight all ships found in the zones which she had marked "around Great Britain, France, Italy, and in the Eastern Mediterranean." (Why We Are at War, p. 23, New York, 1917.) The President promptly broke off diplomatic relations (February 3), and said that we should refrain from hostilities until the commission of "actual overt acts" by Germany forced us to the conviction that she meant to carry out her base threat.
The overt acts came quickly. Between February 3 and April 1 eight American merchant-ships were sunk, and more than forty American lives were destroyed by the Potsdam pirates.
The die was cast. On April 2, 1917, the President advised Congress that the United States could no longer delay the formal acceptance of "the status of belligerent which had been thrust upon it." On April 6 Congress took the necessary action. On the same day the President proclaimed that "a state of war exists between the United States and the Imperial German Government."
Back of this momentous and noble decision, in which the hearts of the immense majority of Americans are with the President, there are undoubtedly many strong and righteous reasons. Some of these I have tried to set forth in the first part of this article. But we must never forget that the specific reason given by the President, the definite cause which forced us into the war, is the German method of submarine warfare, which he has repeatedly denounced as illegal, immoral, inhuman—a direct and brutal attack upon us and upon all mankind. These words cannot be forgotten, nor is it likely that the President will retract them.
They set up at least one steadfast mark in the midst of the present flood of peace talk. There can be no parley with a criminal who is in full and exultant practice of his crime. Unless the U-boat warfare is renounced, repented of, and abandoned by the Potsdam pirates, an honorable peace is unattainable except by fighting for it and winning it. [Footnote 8]
[Footnote 8: Belgian Relief ships sunk: S.S. Camilla, Trevier, Feistein, Storstad, Lars Kruse, Euphrates. Haelen, and Tunis (the last two shelled but not sunk).
Hospital ships sunk: Britannic (probably but not certainly torpedoed); Asturias, March 24. 1917; Gloucester Castle, March 30; Donegal, April 17; Lanfranc, April 17 (with British wounded and German wounded prisoners).
Among the neutral nations Norway alone has lost more than six hundred ships by mines and torpedoes of German origin. The dance of death still goes on.]