One of the outposts causing the dispute, called Tiwintza by the Ecuadorians, and Tiwinza by the Peruvians, came to symbolize the war because of the bitter clashes that took place around it, and the emotional importance that both sides attached to its possession. The conflict continued until the signing of a ceasefire and the eventual separation of forces, supervised by the MOMEP, a multinational mission of military observers from the "guarantor" countries of the 1942 Rio Protocol: Argentina, Brazil, Chile, and the USA.