ASIL Electronic Resource Guide Treaties I. Introduction to Treaty Research
The history of treaties stretches back for thousands of years, (a treaty existed between the Hittites and Akkadians around 1380 BC, for example). However, it is only relatively recently that they, and the rules under which they are formed, have become increasingly codified. After drafting efforts in the early 20th century by various bodies such as the League of Nations, the International Law Commission of the United Nations drafted the Vienna Convention on the Law of Treaties (1969) (http://www.un.org/law/ilc/texts/treaties.htm), which came into force in 1980.