The landlocked mountainous region of Nagorno-Karabakh is the subject of an unresolved dispute between:

The landlocked mountainous region of Nagorno-Karabakh is the subject of an unresolved dispute between:

Explanation

An ethnic and territorial conflict between Armenia and Azerbaijan over the disputed region of Nagorno-Karabakh, inhabited mostly by ethnic Armenians, and seven surrounding districts, inhabited mostly by Azerbaijanis until their expulsion during the First Nagorno-Karabakh War.