Under Fath Ali Shah, Iran went to war against Russia, which was expanding from the north into the Caucasus Mountains, an area of historic Iranian interest and influence. Iran suffered major military defeats during the war. Under the terms of the Treaty of Golestan in 1813, Iran recognized Russia's annexation of Georgia and ceded to Russia most of the north Caucasus region. A second war with Russia in the 1820s ended even more disastrously for Iran, which in 1828 was forced to sign the Treaty of Turkmanchai acknowledging Russian sovereignty over the entire area north of the Aras River (territory comprising present-day Armenia and Republic of Azerbaijan).
