However, NATO supports efforts made by OSCE’s Minsk group, known for spearheading the peace process in eastern Ukraine, to resolve the conflict peacefully. The group is co-chaired by Russia, France and the United States.
The row between Armenia and Azerbaijan erupted in 1988 when the Armenian-dominated autonomous region left the Azerbaijan Soviet Socialist Republic and proclaimed independence after the Soviet collapse in 1991.
This triggered a war that lasted until a Russia-brokered ceasefire was signed in 1994. In September 2015, the conflict escalated, with the sides blaming each other for violating the truce.