The past decade has seen a renaissance in the development of political event data sets.
This has been due to at least three sets of factors. First, there have been technological …

This article presents the UCDP Georeferenced Event Dataset (UCDP GED). The UCDP GED
is an event dataset that disaggregates three types of organized violence (state-based …

The effects of climate change on the ocean environment–especially ocean warming,
acidification, and sea level rise–will impact fish stocks and fishers in important ways. Likely …

There is an enduring interest in how geographic features influence political interactions and
outcomes, and many key factors highlighted in international relations and cross-national …

We consider signed networks in which connections or edges can be either positive
(friendship, trust, alliance) or negative (dislike, distrust, conflict). Early literature in graph …

We highlight how efforts to collect systematic data on conflict have helped foster progress in
peace and conflict research. The Journal of Peace Research has played a key role in these …

Given the abundance of evidence that disputed territory matters, we know remarkably little
about the origins of territorial claims. We argue that the presence of competing historical …

A growing literature on the subnational diffusion of armed conflict rests on the proposition
that political violence triggers more violence, in the same locality and elsewhere. Yet state …

Students of world politics have long shown a special interest in sea power. International
relations, however, tends to treat the means of power as homogeneous and …

This article presents PRIO Conflict Site, a geo-referenced dataset on armed conflict, which
provides geographic information on the location, scope, and size of all conflicts in the …