T-72s and T-80s are not obsolete. They may be junk, but they are not obsolete. Especially not in say Iranian service. Maybe by way of Kazakhstan, which is not too far from Yekaterinburg. Both Iran and Kazakhstan have Caspian sea coasts. Or they could ship through Turkmenistan (possibly Uzbekistan as well).
My money says some will ‘stick’ in Uzbekistan on their way to Tehran.