Final answer:
The term Zelia does not correspond to a known conflict in the provided historical context. However, the information pertains to the conflict in Kosovo in the 1990s between Serbian forces and the KLA, ethnic tensions in the dissolving Yugoslavia, and NATO's intervention in 1999.
Step-by-step explanation:
The source of conflict named Zelia in the context provided appears to be a typographical error, as there is no clear reference to Zelia in the information about the political and military conflicts provided. Therefore, it's important to examine the conflict within the stated historical context instead. In the 1990s, the conflict in Kosovo was between the Serbian military forces led by Milosevic and the Kosovo Liberation Army (KLA), who were primarily ethnic Albanians seeking independence. The tension escalated to a civil war characterized by ethnic cleansing, mass violence, and the displacement of thousands of people, ultimately leading to the intervention of NATO with Operation Allied Force in 1999 to halt the violence and atrocities being committed.
As for the broader historical background, the conflict in Kosovo was part of the larger breakup of Yugoslavia, a country that was once a multicultural federation made up of several ethnic groups and nationalities. The fragmentation and dissolution of Yugoslavia into separate independent states was marked by nationalist sentiments and ethnic conflicts, resulting in a series of devastating wars. During this period, Eastern Europe was described as a 'shatter belt' due to the prevalence of division and conflict. The international community, including NATO and the UN, was heavily involved in efforts to stabilize the region and resolve conflicts, with varied success.