Face it,the desire for Western goods,combined with the crumbling of the Iron Curtain goverments in the form of Tito dying,and the Solidarnosc(Solidarity) movement had more to do with the Soviet Union going under then the Comanche(doesnt work,tends to crash)Helicopter system,or the SDI(also doesnt work)system.
Saying bankrupting America,creating weapon systems that in point of fact didnt work,is what brought down the Soviet empire,is a lack of historical knowledge
Not to mention,the ground work for perestroika was laid under Brezhnev,when the Soviets started partnering with Western Buisnesses