Ecuador repudiated the Rio Protocol in 1960, and border incidents occurred periodically thereafter. None were as serious as the January 1981 incursion by Ecuadorian troops that led to a partial mobilization of forces by both countries. The dispute was resolved, much to Ecuador's displeasure, by the original guarantors of the Rio Protocol--the United States, Argentina, Brazil, and Chile. Periodic incidents since have indicated that problems remain, particularly along a seventy-eight kilometer stretch of the border known as Cordillera del Condor, which was never marked off under the terms of the Rio Protocol.
Ecuadoran-Peruvian border war flared briefly (January 28-February 2); it was quickly and effectively mediated by the Organization of American States (OAS).