Paul M. Hollister, The German Secret Service in America 1914-1918
“ Audacious as they were in their use of American soil as the base for their plans, the German Embassy had certain obligations to the United States Government, which they felt must be observed. The unspeakable falsifying which is sometimes called expediency, sometimes diplomacy, required that official America must know nothing of the intentions of which the Embassy itself was fully conversant and approving. Further, a palliative must be supplied to the American people in advance. ”
