The year is 1930 and J. Walther Christie is approached by Soviet OGPU agents through a trade organization named AMTORG to purchase his M1930 tank chassis. This move was apparently illegal given that such a sale was considered exportation of war material. Given the Soviets actually deceived the US gov. in our timeline and managed to ship the chassis back to Russia as an "agricultural tractor", where this design was refined over time to produce the BT series of tanks and eventually the T-34; what if the US gov. caught wind of the sale before it was finalized, or the shipment was confiscated after being proven to violate legislation over the non-exportation of war materials? What alternative tank design could have taken the place of the Christie suspension system? How could the lack of the BT series have affected the Soviet-Japanese Border Skirmishes, Spanish Civil War, or the Winter War? What would become of the T-34 design?