An agreement between two or more states is called a multilateral agreement. Many of the agreements are to do with trade or collaboration in international development.
A formal agreement between two or more nations is called a treaty.
a treaty is an agreement between two or more nations.
interstate compact a treaty is an agreement between two nations.
treaty
When an agreement is formed between two nations the mort popular term is Treaty.
the member nations got united under an agreement.
That is a treaty.
A truce or cease-fire agreement between warring nations is commonly referred to as an "armistice." This formal agreement typically halts hostilities and allows for negotiations toward a more lasting peace. Armistices can be temporary or lead to more comprehensive peace treaties.
A formal agreement between foreign nations is commonly called an accord. However, they also can be called international agreements as well.
entente
An alliance.
Trade embargoes