Glossary: Protocol of Rio de janeiro (Rio Protocol)

DEFINITION:
An agreement concluded in Rio de Janeiro on January 29, 1942, between Peru and Ecuador with the participation of the mediatory nations of Argentina, Brazil, and the United States. It was ratified by the congresses of both Peru and Ecuador on February 26, 1942, and it established the border between the two countries as internationally recognized today. Following the discovery of the Ro Cenepa between the Zamora and Santiago rivers in the Cordillera del Cndor in 1951, Ecuador disputed the treaty demarcation, which then stopped, leaving a stretch of the border uncharted. Ecuador repudiated the treaty in 1960, but the guarantor powers ruled this repudiation invalid.

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