Federal subject

The federal subjects of Russia, also referred to as the subjects of the Russian Federation (Russian: субъекты Российской Федерации subyekty Rossiyskoy Federatsii) or simply as the subjects of the federation (Russian: субъекты федерации subyekty federatsii), are the constituent entities of Russia, its top-level political divisions according to the Constitution of Russia. Since March 18, 2014, the Russian Federation constitutionally consists of 85 federal subjects, although the two most recently added subjects are internationally recognized as part of Ukraine.

According to the Russian Constitution, the Russian Federation consists of republics, krais, oblasts, cities of federal importance, an autonomous oblast, and autonomous okrugs, all of which are equal subjects of the Russian Federation. Three Russian cities of federal importance have a status of both city and separate federal subject which comprises other cities and towns (Zelenograd, Troitsk, Kronstadt, Kolpino, etc.) within federal city keeping old structure of postal address. In 1993, there were 89 federal subjects listed. By 2008, the number of federal subjects had been decreased to 83 because of several mergers. In 2014, Sevastopol and the Republic of Crimea became the 84th and 85th federal subjects of Russia.

Every federal subject has its own head, a parliament, and a constitutional court. Federal subjects have their own constitution and legislation. Subjects have equal rights in relations with federal government bodies. The federal subjects have equal representation—two delegates each—in the Federation Council, the upper house of the Federal Assembly. They do, however, differ in the degree of autonomy they enjoy (asymmetric federalism).

...
Wikipedia