Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The Russo-Persian War of 1826-1828 was the last major military conflict between the Russian Empire and the Persian Empire. After the Treaty of Gulistan concluded the previous Russo-Persian War in 1813, peace reigned in the Caucasus for thirteen years. However, Fath ''Ali Shah, constantly in need of foreign subsidies, relied on the advice of British agents, who pressed him to reconquer the territories lost to Russia and pledged their support to military action. The matter was decided upon in spring 1826, when a bellicose party of Abbas Mirza prevailed in Tehran and the Russian minister, Aleksandr Sergeyevich Menshikov, was placed under house arrest.