History
Eastern Georgia was the ancient kingdom of Kartli, which the Greeks and Romans called Iberia, with its capital at Mtskheta where the Aragvi joins the Mtkvari. It was here that King Mirian III accepted Christianity from Saint Nino in the early fourth century. In the fifth century King Vakhtang Gorgasali founded a new settlement by the hot springs downstream, and his successors moved the capital to Tbilisi, whose name comes from the Georgian word for warm. The city spent centuries under outside rule, as an Arab emirate from the eighth century, until David the Builder took it in 1122 and made it the capital of a united medieval Georgia.
After the Mongol invasions and the collapse of the united kingdom in the fifteenth century, Kakheti became a separate kingdom with its capital first at Gremi and later at Telavi. Persian campaigns under Shah Abbas in the early seventeenth century devastated it, killing or deporting much of the population. King Erekle II reunited Kartli and Kakheti in 1762, built Sighnaghi's walls, and signed the Treaty of Georgievsk with Russia in 1783; Russia failed to defend him when a Persian army sacked Tbilisi in 1795.
Under Russian rule Tiflis, as it was then officially called, became the administrative capital of the whole Caucasus, a multi-ethnic city of Georgians, Armenians, Persians and Russians, and the Georgian Military Highway was built over the mountains to connect it with the empire. In the Soviet period Rustavi grew as a steel town and Tbilisi sprawled into housing estates. The capital was the stage for the fighting of 1991–92, the Rose Revolution of 2003 and the mass protests of recent years, while Akhalgori, in the Mtskheta-Mtianeti region, has been held by South Ossetia's Russian-backed authorities since 2008.
