"Oplot" is claimed to be the main battle tank for Ukrainian army but in fact not more than 10 items were bought by Ukrainian army. It is the most comprehensive tanks ever built by Ukraine and is
T-64 BM Bulat
Main battle tank. Tank BM "Bulat" is in fact a result of comprehensive modernization of T-64B.
T-64 used to be the main battle tank for Soviet Union from late 196-xx. Different modifications of T-64, mainly T-64BV are main tanks of Ukrainian army.
T-84 is one of the first modifications of tanks produced in Ukraine after collapse of Soviet Union.
The T-90 is claimed to be the best Russian tank nowadays. It became the successor of the soviet T-72 main battle tank incorporating also proven features found in the more comprehensive but still
The T-72 is a Soviet-designed main battle tank that entered production in 1972 and became the most popular tank (est. 50,000 built) of the second generation of tanks in the world.
T-72B3 is one of the latest modernization of the ageing T-72B tanks that start being delivered to the Russian military forces in 2013.
The T-80 is a soviet main battle tank of the third-generation designed and manufactured by KBTM of Omsk .