The Kaiser asked his commanders to listen to the warnings of his friend , the eminent chemist Walther Nernst , who knew America well .
The navy advocated unrestricted submarine warfare , which would surely bring the United States into the war .
The Kaiser asked his commanders to listen to the warnings of his friend , the eminent chemist Walther Nernst , who knew United States well .
The navy advocated unrestricted submarine warfare , which would surely bring the United States into the war .