I think the best thing that happened with China (other than Moa kicking the bucket) was regaining Hong Kong it gave them an instant ecconomic resource that was the real instigator of their incredible growth. As an arms supplier they fall well short of what the west has supplied to many very dubious nations.
It's a good thing for us too (short term until they bury us economically in 60 years). Giving them a closer look at Capitalism had to soften some of the red hard-liners.
The west has supplied to dubious nations but none with the lofty aspirations of Iran.. They want to return to the "Golden Age of Persia"