About UCDP

The Uppsala Conflict Data Program (UCDP) has recorded ongoing violent conflicts since the 1970s. The data provided is one of the most accurate and well-used data-sources on global armed conflicts and its definition of armed conflict is becoming a standard in how conflicts are systematically defined and studied.

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Lecture on Peace Research by Peter Wallensteen

The Department has recorded a lecture on the origins and developments of peace research globally and at Uppsala University with Professor Peter Wallensteen.

Watch the lecture.

Program Overview

Program Director
Peter Wallensteen,
Senior Professor of Peace and Conflict Research, since 2012. Dag Hammarskjöld Professor of Peace and Conflict Research, Uppsala University 1985-2012.

Program Leader
Lotta Themnér (formerly Harbom), Research Coordinator

Uppsala Conflict Data Program — an Overview

The Uppsala Conflict Data Program (UCDP) collects information on a large number of aspects of armed violence since 1946. Since the 1970s, the Uppsala Conflict Data Program (UCDP) has recorded ongoing violent conflicts. This effort continues to the present day, now coupled with the collection of information on an ever broadening scope of aspects pertaining to organised violence, such as the resolution and dynamics of conflict. The UCDP data is one of the most accurate and well-used data-sources on global armed conflicts and its definition of armed conflict is becoming a standard in how conflicts are systematically defined and studied. Data on armed conflicts have been published yearly in the report series States in Armed Conflict (1987-2012), in the SIPRI Yearbook since 1988, the Journal of Peace Research since 1993 and in the Human Security Reports since 2005. In addition UCDP researchers conduct theoretically and empirically based analyses of armed conflict: its causes, escalation, spread, prevention and resolution. These studies are regularly featured in international journals and books.

Since 2004, the UCDP also operates and continuously updates its online database (UCDP Conflict Encyclopedia) on armed conflicts and organised violence, in which several aspects of armed conflict such as conflict dynamics and conflict resolution are available. The latest expansion is the UCDP's Georeferenced Event Data (GED).

Latest News

UCDP GED 1.9: 26 years of armed conflict and organised violence in Southeast Asia

The Uppsala Conflict Data Project at the Department launched on 11 June the UCDP Georeferenced Events Dataset release 1.9 (UCDP GED 1.9). The dataset covers individual incidents of armed conflict and organised violence (i.e. clashes, battles and attacks against civilians) in East and Southeastern Asia over a 26-year span covering January 1989 to December 2014.

The dataset is the second released subset of the UCDP GED after Africa (1989-2010). The next subset of GED will be released in early October

2015 and will contain the remainder of Asia as well as updated data for Africa until 2014.

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