Nagorno-Karabakh is a mountainous enclave located in the South Caucasus. For decades, the territory has been the source of conflict between Armenia and Azerbaijan. It is internationally recognized as part of Azerbaijan, however, ethnic Armenians have been living in this territory for hundreds of years. The World’s Daniel Ofman reports on how the conflict over Nagorno-Karabakh is still shaping the fraught relationship between Armenia and Azerbaijan today.