Human Rights Watch documented the use of two types of ground-launched cluster munitions in multiple locations in Azerbaijan and Nagorno-Karabakh during the armed conflict that began on September 27 and concluded on November 10 with a ceasefire. Both Armenian and Azerbaijani forces used cluster munitions during the conflict. The cluster munitions attacks caused civilian casualties, both at the time of attack and from submunitions that failed to detonate at the time of attack.
Cluster munitions have been banned because of their widespread indiscriminate effects and long-lasting danger from their remnants. The 2008 Convention on Cluster Munitions, ratified by 110 countries, comprehensively prohibits cluster munitions and requires clearance of cluster munition remnants and assistance to victims of the weapons. Neither Armenia nor Azerbaijan is a party to the treaty. Both have stated in the past that they cannot accede to the ban convention until the dispute over Nagorno-Karabakh and other contested territories is resolved.
Source: Human Rights Watch