The following year, the Peruvian Ambassador Juan Miguel Bakula Patino had an interview with Foreign Minister Jaime del Valle on this matter, and handled a diplomatic note, dated 23 May 1986.

Public discussion on this subject was revived in 2005, when the Congress of Peru began to process a bill on determining the baseline of maritime domain, which are sequences of points that determine where it finishes the coastal edge and therefore begins the territorial sea as such, setting the width of the maritime domain of Peru to the distance of 200 nautical miles, using a line bisector in the south, bordering with Chile.

In the case, Peru, whose legal team included jurist Juan Vicente Ugarte del Pino,[1] argued that the maritime boundary has never been defined by a treaty and should run on a southwestern direction from their land border, perpendicular to the natural slope of the South American coast in an equidistant angle from both coastlines.

Chile claims that in trilateral treaties signed together with Peru and Ecuador in 1952 and 1954, it is clearly stated that a maritime boundary (written as "límite marítimo" in Spanish) runs in a western direction, parallel to the equator.

Senators and members of parliament advocating this position include Ivan Moreira,[6] Jorge Tarud,[6] Jaime Orpis,[7] and Fulvio Rossi.

[8] Furthermore, the newly designated minister for foreign relations, Heraldo Muñoz, has declared that the topic of membership in the Pact of Bogota should be under "legitimate discussion".

[9] On February 11, 2014, President Sebastián Piñera, originally a strong advocate of The Hague, requested a report on the advantages and disadvantages of Chile's membership in the Pact of Bogota.