The Israel–Jordan peace treaty, sometimes referred to as the Wadi Araba Treaty, is an agreement that ended the state of war that has existed between the two countries since the 1948 Arab–Israeli War and established mutual diplomatic relations. In addition to establishing peace between the two countries, the treaty also settled land and water disputes, provided for broad cooperation in tourism and trade, and obligated both countries to prevent their territory being used as a staging ground for military strikes by a third country.

A declaration of war is a formal act by which one state announces existing or impending war activity against another. The declaration is a performative speech act by an authorized party of a national government, in order to create a state of war between two or more states.