evidence: Nagorno-Karabakh is part of Azerbaijan, but its population is majority Armenian. As the Soviet Union saw increasing tensions in its constituent republics in the 1980s, Nagorno-Karabakh voted to become part of Armenia - sparking a war that stopped with a ceasefire in 1994. [...] Modern-day Armenia and Azerbaijan became part of the Soviet Union when it formed in the 1920s. Nagorno-Karabakh was an ethnic-majority Armenian region, but the Soviets gave control over the area to Azerbaijani authorities. [...] But in August 2019 Mr Pashinyan told crowds of ethnic Armenians assembled in the main city in Karabakh, Stepanakert, that "Artsakh is Armenia, full stop." Artsakh is the Armenian name for Karabakh. The remarks angered Azerbaijan and were repeatedly condemned by President Aliyev.