118 Chapter 2
MID#1160
Dispute Number: 1160
Date(s): October 1907
Participants: 135 Peru/100 Colombia
Outcome (and Settlement): Unclear (None)
Fatalities: None
Narrative: In October 1907, a Peruvian force assisted by a gunboat attacked and
captured the last Colombian settlement in the large concession area between the
Putumayo and Caqueta rivers. Peru took this land and forced Colombian settlers and
rubber gatherers to leave.
MID#1161
Dispute Number: 1161
Date(s): January 18, 1911 to July 19, 1911
Participants: 100 Colombia/135 Peru
Outcome (and Settlement): Compromise (Negotiated)
Fatalities: 1–25 deaths
Narrative: This dispute describes a clash of forces between Colombia and Peru in 1911.
Colombia-Peruvian border uncertainties extended from the liberation of both states
from Spain. Colombia had just established an outpost at La Pedrera, on the tributary
of the Amazon called Apaporis and in the disputed area. Peru, which was significantly
stronger than Colombia, objected to this revision of the status quo and dispatched two
gunboats to La Pedrera to present Colombia with an ultimatum. This ultimatum was
delivered midday on July 10, 1911: abandon the outpost or be forced out. Colombia
refused to leave and fighting commenced. Colombia was quickly overwhelmed by Peru
and surrendered on the 12th. An agreement was signed in Manaos, Brazil, on July 15.
A convention in Bogota, Colombia ended the fighting four days later.
Coding changes: Outcome changed from Compromise.
MID#1598
Dispute Number: 1598
Date(s): April 1912
Participants: 135 Peru/100 Colombia
Outcome (and Settlement): Unclear (None)
Fatalities: None
Narrative: Colombia protested the presence of Peruvian troops in a disputed region
around the Caqueta River.
Coding changes: Start Date changed from January 1912. End Date changed from
April 13, 1912.
MID#1139
Dispute Number: 1139
Date(s): September 1, 1932 to May 7, 1933