There were clashes between police and demonstrators in the Armenian capital of Yerevan on Wednesday, as thousands protested the government’s handling of the Nagorno-Karabakh crisis.
Azerbaijan said it had restored its sovereignty over the territory, after a deadly 24-hour military offensive.
It has led to Armenia being accused of failing to protect ethnic Armenians in the contested territory.
Protesters are calling for Armenia’s Prime Minister Nikol Pashinyan to quit.
They say he made too many concessions in the fight for Nagorno-Karabakh, and did little to help the ethnic Armenians who live there.