These are all different sources of conflict, and they can lead to different types of struggle. There may be
non-state conflicts between two ethnic groups inside one state. There may be formal
civil wars where one group takes up arms against the government, often for control of the capital or for the right to secede.
Asymmetrical conflicts involving guerilla warfare or terrorist tactics can emerge when the two sides are not balanced. There may also be what's known as
aid and trade conflict, where a given war is fuelled at least in part by foreign aid or support.
Genocide and ethnic cleansing are two tactics that have drawn a lot of attention in the post-Cold-War era, particularly after the violence in Bosnia and Rwanda. An ethnic or religious group, acting in part from motivations to right ancient wrongs or 'cleanse' their historical homeland, may remove another ethnic group from a territory.
Psychologist
Vamik Volkan developed the idea of
chosen traumas, which are historical memories (often of a great loss) that can come to define a group's identity and sense of place in the world. These can be kept alive by a group for centuries after the event occurred. Examples of chosen traumas include the Holocaust or the destruction of the Temple for the Jewish people, the 1389 Serb loss in Kosovo to the Ottomans, the collapse of the Soviet Union to the Russians or the siege of Constantinople (present-day Istanbul) to the Greeks. Chosen traumas arguably play a role in contemporary cultural struggles like those in the United States: the Confederate defeat and the transatlantic slave network can both be classified as such.
While these traumas are not 'chosen' in the sense that the groups affected chose to be or remain traumatized, but that these specific traumas were 'chosen' by the groups to be perpetuated in their collective memory, allowing a certain sense of victimhood (with, at times, a resulting passivity, sense of entitlement or desires for vengeance) to become a cornerstone of group identity. While these traumas can remain dormant for decades, even centuries, they can be activated by current events, leaders, stresses or pressures – when activated, they can become a metaphorical banner under which the group can mobilize itself for political action. Which, at times, results in violence.
Chosen traumas and other related factors can not only spark a conflict, they can impact conflicts already in progress. Two types of conflict discussed in the field are
tractable and
intractable conflicts – these refer to disputes that are easier or harder to solve, respectively. Intractable conflicts, for example in Colombia, Israel-Palestine or Afghanistan, often involve historical grievances that cycle through activity or dormancy over an extended period of time, which can confuse observers who assumed the conflict was over.
Identity also plays into this, as history can be used to prop up insecure land concepts or collective identities. A particular interpretation of history can form the core of a group's relationship to a region or to surrounding groups, and challenges to this interpretation can result in an
existential threat.
Facilitator and researcher
Barbara Tint, in her article
History, Memory and Intractable Conflict, describes this process at length.