Since the end of the Nagorno-Karabakh War , Armenia has made the army boost the defense and help defend Nagorno-Karabakh from a possible new attack by neighboring Azerbaijan . Since the end of the Nagorno-Karabakh War , Armenia has committed many elements of the army to help bolster the defense and defend the unrecognized Republic of Nagorno-Karabakh from a possible renewal of hostilities with neighboring Azerbaijan .