Then that source must be incorrect in its findings. Ukraine never built T-72s. All T-72s Ukraine possessed were stocks that were inherited after the USSR collapsed. The USSR had three tank design bureaus: Kharkov, Uralvagonzavod, and Omsk. Post-Soviet period, Ukraine inherited Kharkov and Russia inherited the other two. During the Soviet period, Kharkov designed the T-64, Uralvagonzavod designed the T-72, and Omsk designed the T-80. Since Ukraine lacks the infrastructure to support the T-72s, they were sold off.