Treaty for Amazonian Cooperation.

The Contracting Parties agree to undertake joint actions and efforts to promote the harmonious development of their respective Amazonian territories so as to produce equitable and mutually beneficial results and achieve also the preservation of the environment, and the conservation and rational utilization of the natural resources of those territories. The Parties declare that the exclusive use and utilization of natural resources within their respective territories is a right inherent in the sovereignty of each State and that the exercise of this right shall not be subject to any restrictions other than those arising from international law.
The Treaty explicitly refers to the importance and multiplicity of the functions which the Amazonian rivers have in the process of economic and social development of the region (article V). There shall be complete freedom of commercial navigation on the Amazon and other international Amazonian rivers, observing the fiscal and police regulations in force within the territory of each Contracting Party.
The Treaty covers natural resources in general and gives special attention to flora, fauna and water resources.