The 57-year-old former banker was arrested in June 2020, as was his 31-year-old son who was rounded up on tax evasion charges.

Baku said Shusha, Azerbaijan's "cultural capital" and a historic mountainside city known for producing writers and scholars, and the crown jewel recovered by Azerbaijan after the years of Armenian occupation, came under attack.

Gas from Azerbaijan will be delivered to Romania via the Bulgaria-Greece gas pipeline interconnector, which is expected to be completed next summer.

Oil production in June declined from 718,000 bpd produced in October 2018, when members of OPEC+ agreed to reduce oil production gradually.

Though an armistice is largely holding, border disputes remain common, and a final peace between Azerbaijan and Armenia is elusive.