What is "ossetia"

Ossetia ( Ossetic: Ир, Ирыстон Ir, Iryston; Russian: Осе́тия, Osetiya; Georgian: ოსეთი, Oset'i) is an ethnolinguistic region located on both sides of the Greater Caucasus Mountains, largely inhabited by the Ossetians. The Ossetian language is part of the Eastern Iranian branch of the Indo-European languages family. The Ossetian-speaking area south of the main Caucasus ridge is recognized by most countries as within the borders of Georgia, but under the control of the Russian-backed de facto government of the Republic of South Ossetia. The northern portion of the region consists of the republic of North Ossetia–Alania within the Russian Federation.