President Wilson: U.S. 'Strict Accountability' Warning to Germany (February 10, 1915)
After World War I started Great Britain blockaded Germany.
In response Germany declared a War Zone around Great Britain and used unrestricted submarine warfare sinking all ships regardless if they were belligerents or neutral countries.
In the following Wilson warned that the US would hold Germany accountable for any harm done to Americans or their property on the seas.
“the Imperial German Government can readily appreciate that the Government of the United States would be constrained to hold the Imperial Government of Germany to a strict accountability…and to take any steps it might be necessary to take to safeguard American lives and property and to secure to American citizens the full enjoyment of their acknowledged rights on the high seas.”