The Government had already had occasion to protest against British interference with allied commerce when, on February 4, 1915, the Germans proclaimed the waters about the British Isles a war zone open to submarine activities. The President promptly warned the German Government that it would be held to "strict accountability" if American ships were sunk or American lives lost in the submarine campaign. Along with this a message was sent to the British Government protesting against British restriction of neutral commerce. There was good ground for objection to the practices of both Governments, and the simultaneous protests emphasized the neutral attitude of the United States. Not until later was it evident that to the Germans this policy seemed to indicate the possibility of putting pressure on England through America. "Strict accountability" seemed to be a popular watchword, except among pacifists and German sympathizers, but Americans soon began to be killed by the submarines without provoking the Government to action. When the Lusitania was sunk on May 7, 1915, and more than a hundred of the 1,200 victims were Americans a great part of the nation which had been growing steadily more exasperated felt that now the issue must be faced. The President was the personal conductor of the foreign policy of the Administration; Mr. Bryan's sole interest in foreign affairs seemed to be the conclusion of a large number of polite and valueless treaties of arbitration, and it was certain that with Germany, as with Mexico, the President would deal in person. In the few days after the sinking of the Lusitania the nation waited confidently for the President's leadership, and public sentiment was perhaps more nearly unanimous than it had been for eight months past, or was to be again for two years more. The President's note on May 13 met with general approval. It denied any justification for such acts as the sinking of the Lusitania, and warned the Germans that the Government of the United States would not "omit any word or act" to defend the rights of its citizens. But some of the effect of that declaration had already been destroyed by a speech the President had made two days before, in which he had said that "there is such a thing as a man being too proud to fight," and the Germans, it was learned presently, had been still further reassured by a declaration of Mr. Bryan (entirely on his own authority) to the Austrian Ambassador that the note was intended only for home consumption.