ICRC databases on international humanitarian law
Treaties and Documents
1949 Conventions and Additional Protocols, and their Commentaries
Historical Treaties and Documents
Agreement supplementary to The Nyon Agreement. Geneva, 17 September 1937.
Whereas under the arrangement signed at Nyon on 14 September 1937, whereby collective measures were agreed upon relating to piratical acts by submarines in the Mediterranean, the participating Powers reserved the possibility of taking further collective measures; and
Whereas it is now considered expedient that such measures should be taken against similar acts by surface vessels and aircraft;
In view thereof, the undersigned, being authorized to this effect by their respective Governments, have met in conference at Geneva on the seventeenth day of September and have agreed upon the following provisions which shall enter immediately into force: