During the Cold War, the number of different tank types the Soviet Union maintained often puzzled Western analysts. Eight distinct families of tanks were operated, supported, and modernized simultaneously — the PT-76, T-10, T-54, T-55, T-62, T-64, T-72 and T-80. The end of the Soviet Union appeared to signal the demise of the philosophy of multiple tank lines.
Following the debacle that was the T-80 in Grozny, the T-90 and T-72 were the only tanks that appeared to be receiving significant attention from the military — T-80Us and T-80UEs were only refit and modernized in small numbers. This appeared to be a cost saving measure, as both are produced and supported at the Uralvagonzavod tank plant.