Not just West Germany:

Van Vuuren’s ... and his researchers ... combed through over 2 million pages of documents, many of them reluctantly declassified and released by state agencies pursuant to applications brought under access to information legislation. They amassed 40,000 documents from 25 public archives and various collections ... Their detailed investigations of the sustained, multi-pronged complicity of governments (including all five permanent members of the UN Security Council), banks, defence corporations, intelligence officials and private individuals in sanctions-busting activities are distilled in stark infographics peppered throughout the book.

That includes western governments, but also the USSR and China.

I assume you're still quite young or a bit naive. But even at the time it was all a bit of a farce. Towards the end of the cold war, it was common knowledge that the elite of both sides only really cared about making money. That's also why the nomenklatura were often in an excellent position to become rich from the fall of the USSR. More things change, more they stay the same. Bleibt alles anders. The propaganda was one thing, but when it came to trade and the national interest, pragmatism often beat ideology for both sides.

Of course, in the case of East Germany, it was partly because they were desperate for hard currency. Which is probably also why the sold prisoners' blood to West Germany and tested drugs for companies like Bayer, Pfizer or Roche on their own citizens:

Until the fall of the Wall, Western pharmaceutical companies conducted drug trials in East German hospitals. More than 50,000 patients served as subjects, often without their knowledge, and many died. The human experiments haven't been fully investigated to this day despite fresh evidence of wrongdoing.

No one comes up smelling of roses from all this of course.

I assume you'll think this is just more 'anti-communist vermin making up myths' to undermine East Germany. But the DDR is dead, the Stasi's records are open to the public, and if anything all these revelations are far more damaging to western companies and countries which still exist, so whatever.