Plettner, TheodoreConflict onset and duration have been studied extensively, however the dynamics of what happens within a conflict have received much less attention. At the center of the issue of conflict dynamics is conflict intensity. Some civil conflicts resemble interstate wars with armies using conventional tactics which kill thousands of people per year, while many others consist of small guerrilla conflicts that kill only dozens. The capabilities of the rebel groups in these conflicts determine the tactics they will adopt, which in turn determines how intensely the conflict will be fought. Foreign intervention into civil conflicts influences the tactical decisions of actors, further increasing conflict intensity. To add to the disastrous effects of high-intensity conflicts, when intensity increases, conflicts also last longer, increasing the period over which the damage from these conflicts is inflicted.enDissertationPolitical scienceInternational relationsPeace studiescivil conflictcivil wardurationexternal supportintensity