The websites of major international organizations often post their creative contracts: · The comprehensive database containing more than 11,000 international treaties and agreements in force in the United States, as well as 1,800 bilateral tax agreements from 185 countries (also known as Covenant treaties, protocols, acquis, conventions, covenants or charters) are international agreements between states and/or international organizations. Treaties are primary sources of international law. For a guide to finding contracts, click here. International treaty law is based on the agreement of States parties and, as such, the treaty is valid only between those parties. When determining the application of the contract, pay close to the reservations, agreements and declarations of the parties that may modify the obligations of that State. Treaties are binding on non-parties only if they form the basis of customary international law. Contracts can be bilateral (two parties) or multilateral (between several parties) and a contract usually only binds the parties. An agreement « enters into force » if the conditions for entry into force set out in the agreement are met. Bilateral agreements usually enter into force when the two parties agree to be bound from a given date. The Vienna Convention on the Law of Treaties (.pdf) defines a treaty as « an international agreement concluded in writing between States and subject to international law, whether contained in a single instrument or in two or more interconnected instruments, whatever its particular name ». This study is part of a larger project to lay the groundwork for comparisons between legal frameworks for the ratification of international treaties in different legal systems. . .