The separatist government of Nagorno-Karabakh announced Thursday that it will dissolve itself and the unrecognized republic will cease to exist by the end of the year, and Armenian officials said more than half of the population has already fled.

That is after Azerbaijan carried out a lightning offensive to reclaim full control over its breakaway region and demanded that Armenian troops in Nagorno-Karabakh lay down their weapons and the separatist government dissolve itself.

A decree to that effect was signed by the region’s separatist President Samvel Shakhramanyan. The document cited an agreement reached last week to end the fighting under which Azerbaijan will allow the “free, voluntary and unhindered movement” of Nagorno-Karabakh residents and disarm troops in Armenia in exchange.

Nagorno-Karabakh is a region of Azerbaijan that came under the control of ethnic Armenian forces, backed by the Armenian military, in separatist fighting that ended in 1994. During a six-week war in 2020, Azerbaijan took back parts of the region along with surrounding territory that Armenian forces had claimed during the earlier conflict.

Following the latest offensive and a cease-fire agreement brokered by Russian peacekeepers, Azerbaijan and Nagorno-Karabakh separatist authorities have begun talks on “reintegrating” the region back into Azerbaijan.

Azerbaijani authorities have pledged to respect the rights of ethnic Armenians in the region and restore supplies after a 10-month blockade.

Many local residents, however, fear reprisals and have decided to leave for Armenia.