Sadarak District
Sadarak (Sədərək) is a raion of Azerbaijan.  It is in the Nakhchivan Autonomous Republic. It was split from the Ilyich raion (present-day Sharur) in 1990. It has an exclave in Armenia, Karki.  Karki came under Armenian control in May 1992.  It was captured during the Nagorno-Karabakh War.  The capital was Sədərək.  It is now Heydarabad.