File No. 763.72111/4121a
The Acting Secretary of State to Diplomatic Officers in Sweden, Norway, Denmark, the Netherlands, and Spain
Telegraph me briefly and as soon as possible what position has been taken by the government to which you are accredited in regard to belligerent war or merchant submarines visiting neutral ports or territorial waters. Cable substance of any government decrees or decisions on this subject. I wish to obtain information as to what restrictions, if any, have been imposed upon use of neutral ports and waters by belligerent submarines, either before or since the Entente note of August last respecting treatment of submarines by neutral powers.