29 December - The "Drago Doctrine" is put forward by Argentina's Foreign Minister Luis María Drago, stating that countries, including the USA, should not use armed force against other countries to collect debts arising from international loans.[2]
date unknown - The Paz Palace, Buenos Aires, is commissioned by José C. Paz, the proprietor of the city's then-second most-circulated newspaper, La Prensa.[3]
^Joseph S. Tulchin, Francisco Rojas Aravena, Ralph H. Espach, "Strategic Balance and Confidence Building Measures in the Americas", Stanford University Press, 1998, ISBN0-8047-3608-1, ISBN978-0-8047-3608-4
^T S Woolsey, "Drago and the Drago Doctrine", The American Journal of International Law, Vol. 15, No. 4, July 1921