Earlier quoted context omitted.
There is a popular myth that 'there was a mighty USSR and some enemies ruined it'. The Soviet Union collapsed because of massively broken economy. That's just basic science. They exported oil and imported grain. Russia imported GRAIN for gods sake. Then oil prices collapsed. Next? They did nothing and just ate through the resources until they were no more. And then 'evil liberals/evil west destroying the great countr…
The truth is in between. Was USSR full of internal problems? Yes. Did USA and allies want USSR destroyed and actively work on? Also yes. Saying that Cold War and the arms race had absolutely no role in USSR collapse is either a blatant lie or incompetence.
Let's remind that full-on opening of the market was not what the west promised, but it's what they pushed for once the reforms passed a point of no return and they wouldn't take "no" for an answer. Propaganda is what won the cold war.