By RFE/RL's Azerbaijani Service

Ruben Vardanian, a former Russian citizen of Armenian descent who served as prime minister in the de facto government of the breakaway region of Nagorno-Karabakh, has begun a hunger strike in a Baku prison, his family said on April 19. Vardanian, a billionaire banker who had renounced his Russian citizenship, was arrested and brought to Baku after a military operation by Azerbaijan retook Nagorno-Karabakh from ethnic-Armenian forces in September. He served as prime minister of the region from November 2022 to February 2023. He has demanded his release and that of other detained former Karabakh separatist leaders, his family said. Baku hasn't confirmed the hunger strike.