Editors. "Russians take Baku and Derbent from Persia". The Literary Encyclopedia. First published 01 April 2011
[http://www.litencyc.com/php/stopics.php?rec=true&UID=17268, accessed 19 May 2013.]
Russia takes the Persian cities of Baku and Derbent, on the Caspian Sea. The Persian forces are unable to prevent this, because they are currently pre-occupied with an Afghan invasion by Mir Mahmud, who by the end of the month has secured his position as the new Shah of Persia.